module top_module (
    input clk,
    input reset,
    input x,
    output reg z
);

    reg [2:0] state, next_state;

    // State encoding
    localparam S0 = 3'b000, // State 000
               S1 = 3'b001, // State 001
               S2 = 3'b010, // State 010
               S3 = 3'b011, // State 011
               S4 = 3'b100; // State 100

    // State transition logic
    always @(*) begin
        case (state)
            S0: next_state = (x) ? S1 : S0;
            S1: next_state = (x) ? S4 : S1;
            S2: next_state = (x) ? S1 : S2;
            S3: next_state = (x) ? S2 : S1;
            S4: next_state = (x) ? S4 : S3;
            default: next_state = S0;
        endcase
    end

    // Output logic
    always @(*) begin
        case (state)
            S3, S4: z = 1;
            default: z = 0;
        endcase
    end

    // State register
    always @(posedge clk) begin
        if (reset)
            state <= S0;
        else
            state <= next_state;
    end

endmodule

module top_module (
    input clk,
    input reset,
    input x,
    output reg z
);

    reg [2:0] state, next_state;

    // State encoding
    localparam S0 = 3'b000,
               S1 = 3'b001,
               S2 = 3'b010,
               S3 = 3'b011,
               S4 = 3'b100;

    // State transition
    always @(*) begin
        case (state)
            S0: next_state = (x == 1'b0) ? S0 : S1;
            S1: next_state = (x == 1'b0) ? S1 : S4;
            S2: next_state = (x == 1'b0) ? S2 : S1;
            S3: next_state = (x == 1'b0) ? S1 : S2;
            S4: next_state = (x == 1'b0) ? S3 : S4;
            default: next_state = S0;
        endcase
    end

    // State register with synchronous reset
    always @(posedge clk) begin
        if (reset)
            state <= S0;
        else
            state <= next_state;
    end

    // Output logic
    always @(*) begin
        case (state)
            S3: z = 1'b1;
            S4: z = 1'b1;
            default: z = 1'b0;
        endcase
    end

endmodule

module top_module (
    input clk,
    input reset,
    input x,
    output reg z
);

    reg [2:0] y; // Present state

    // State encoding
    localparam [2:0] S0 = 3'b000,
                     S1 = 3'b001,
                     S2 = 3'b010,
                     S3 = 3'b011,
                     S4 = 3'b100;

    // State transition and output logic
    always @(posedge clk) begin
        if (reset) begin
            y <= S0;
        end else begin
            case (y)
                S0: begin
                    if (x == 0) y <= S0;
                    else y <= S1;
                    z <= 0;
                end
                S1: begin
                    if (x == 0) y <= S1;
                    else y <= S4;
                    z <= 0;
                end
                S2: begin
                    if (x == 0) y <= S2;
                    else y <= S1;
                    z <= 0;
                end
                S3: begin
                    if (x == 0) y <= S1;
                    else y <= S2;
                    z <= 1;
                end
                S4: begin
                    if (x == 0) y <= S3;
                    else y <= S4;
                    z <= 1;
                end
                default: y <= S0;
            endcase
        end
    end

endmodule

module top_module (
    input clk,
    input reset,
    input x,
    output reg z
);

    reg [2:0] state, next_state;

    // State encoding
    localparam S0 = 3'b000,
               S1 = 3'b001,
               S2 = 3'b010,
               S3 = 3'b011,
               S4 = 3'b100;

    // State transition logic (combinational)
    always @(*) begin
        case (state)
            S0: next_state = (x) ? S1 : S0;
            S1: next_state = (x) ? S4 : S1;
            S2: next_state = (x) ? S1 : S2;
            S3: next_state = (x) ? S2 : S1;
            S4: next_state = (x) ? S4 : S3;
            default: next_state = S0;
        endcase
    end

    // State register logic (sequential)
    always @(posedge clk) begin
        if (reset)
            state <= S0;
        else
            state <= next_state;
    end

    // Output logic (combinational)
    always @(*) begin
        case (state)
            S3: z = 1;
            S4: z = 1;
            default: z = 0;
        endcase
    end

endmodule

module top_module (
    input clk,
    input reset,
    input x,
    output reg z
);

    // State declarations
    reg [2:0] state, next_state;

    // State encoding
    localparam S0 = 3'b000,
               S1 = 3'b001,
               S2 = 3'b010,
               S3 = 3'b011,
               S4 = 3'b100;

    // State transition logic
    always @(*) begin
        case (state)
            S0: next_state = (x) ? S1 : S0;
            S1: next_state = (x) ? S4 : S1;
            S2: next_state = (x) ? S1 : S2;
            S3: next_state = (x) ? S2 : S1;
            S4: next_state = (x) ? S4 : S3;
            default: next_state = S0;
        endcase
    end

    // Output logic
    always @(*) begin
        case (state)
            S3, S4: z = 1'b1;
            default: z = 1'b0;
        endcase
    end

    // State register logic
    always @(posedge clk) begin
        if (reset)
            state <= S0;
        else
            state <= next_state;
    end

endmodule

module top_module (
    input clk,
    input reset,
    input x,
    output reg z
);

    reg [2:0] y, Y; // State register y and next state Y

    always @(posedge clk) begin
        if (reset)
            y <= 3'b000; // Synchronous reset to state 000
        else
            y <= Y; // Transition to next state
    end

    always @(*) begin
        case (y)
            3'b000: begin
                Y = (x == 1'b0) ? 3'b000 : 3'b001;
                z = 1'b0;
            end
            3'b001: begin
                Y = (x == 1'b0) ? 3'b001 : 3'b100;
                z = 1'b0;
            end
            3'b010: begin
                Y = (x == 1'b0) ? 3'b010 : 3'b001;
                z = 1'b0;
            end
            3'b011: begin
                Y = (x == 1'b0) ? 3'b001 : 3'b010;
                z = 1'b1;
            end
            3'b100: begin
                Y = (x == 1'b0) ? 3'b011 : 3'b100;
                z = 1'b1;
            end
            default: begin
                Y = 3'b000;
                z = 1'b0;
            end
        endcase
    end

endmodule

module top_module (
    input clk,
    input reset,
    input x,
    output reg z
);

    reg [2:0] state, next_state;

    // State encoding
    localparam S0 = 3'b000,
               S1 = 3'b001,
               S2 = 3'b010,
               S3 = 3'b011,
               S4 = 3'b100;

    // State transition
    always @(posedge clk) begin
        if (reset)
            state <= S0;
        else
            state <= next_state;
    end

    // Next state logic
    always @(*) begin
        case (state)
            S0: if (x) next_state = S1; else next_state = S0;
            S1: if (x) next_state = S4; else next_state = S1;
            S2: if (x) next_state = S1; else next_state = S2;
            S3: if (x) next_state = S2; else next_state = S1;
            S4: if (x) next_state = S4; else next_state = S3;
            default: next_state = S0;
        endcase
    end

    // Output logic
    always @(*) begin
        case (state)
            S0, S1, S2: z = 0;
            S3, S4: z = 1;
            default: z = 0;
        endcase
    end

endmodule

module top_module (
	input clk,
	input reset,
	input x,
	output reg z
);

    reg [2:0] state, next_state;

    // State encoding
    localparam S0 = 3'b000,
               S1 = 3'b001,
               S2 = 3'b010,
               S3 = 3'b011,
               S4 = 3'b100;

    // State transition
    always @(*) begin
        case (state)
            S0: next_state = (x) ? S1 : S0;
            S1: next_state = (x) ? S4 : S1;
            S2: next_state = (x) ? S1 : S2;
            S3: next_state = (x) ? S2 : S1;
            S4: next_state = (x) ? S4 : S3;
            default: next_state = S0; // Default case to handle undefined states
        endcase
    end

    // Synchronous state update
    always @(posedge clk) begin
        if (reset)
            state <= S0;
        else
            state <= next_state;
    end

    // Output logic
    always @(*) begin
        case (state)
            S0, S1, S2: z = 0;
            S3, S4: z = 1;
            default: z = 0; // Default case for output
        endcase
    end

endmodule

module top_module (
    input clk,
    input reset,
    input x,
    output reg z
);
    reg [2:0] state, next_state;

    // State encoding
    localparam S0 = 3'b000;
    localparam S1 = 3'b001;
    localparam S2 = 3'b010;
    localparam S3 = 3'b011;
    localparam S4 = 3'b100;

    // State transition logic
    always @(*) begin
        case(state)
            S0: next_state = (x == 1'b0) ? S0 : S1;
            S1: next_state = (x == 1'b0) ? S1 : S4;
            S2: next_state = (x == 1'b0) ? S2 : S1;
            S3: next_state = (x == 1'b0) ? S1 : S2;
            S4: next_state = (x == 1'b0) ? S3 : S4;
            default: next_state = S0;
        endcase
    end

    // State flip-flops
    always @(posedge clk) begin
        if (reset) begin
            state <= S0;
        end else begin
            state <= next_state;
        end
    end

    // Output logic
    always @(*) begin
        case(state)
            S3, S4: z = 1'b1;
            default: z = 1'b0;
        endcase
    end

endmodule

module top_module (
    input clk,
    input reset,
    input x,
    output reg z
);

    reg [2:0] state, next_state;

    // State definitions
    localparam S0 = 3'b000;
    localparam S1 = 3'b001;
    localparam S2 = 3'b010;
    localparam S3 = 3'b011;
    localparam S4 = 3'b100;

    // State transition logic
    always @(*) begin
        case(state)
            S0: begin
                z = 0;
                next_state = x ? S1 : S0;
            end
            S1: begin
                z = 0;
                next_state = x ? S4 : S1;
            end
            S2: begin
                z = 0;
                next_state = x ? S1 : S2;
            end
            S3: begin
                z = 1;
                next_state = x ? S2 : S1;
            end
            S4: begin
                z = 1;
                next_state = x ? S4 : S3;
            end
            default: begin
                z = 0;
                next_state = S0;
            end
        endcase
    end

    // State update logic
    always @(posedge clk) begin
        if (reset) begin
            state <= S0;
        end else begin
            state <= next_state;
        end
    end

endmodule

module top_module (
    input clk,
    input reset,
    input x,
    output reg z
);

    reg [2:0] state, next_state;

    // State encoding
    localparam S0 = 3'b000;
    localparam S1 = 3'b001;
    localparam S2 = 3'b010;
    localparam S3 = 3'b011;
    localparam S4 = 3'b100;

    // State transition
    always @(*) begin
        case (state)
            S0: next_state = (x == 1'b0) ? S0 : S1;
            S1: next_state = (x == 1'b0) ? S1 : S4;
            S2: next_state = (x == 1'b0) ? S2 : S1;
            S3: next_state = (x == 1'b0) ? S1 : S2;
            S4: next_state = (x == 1'b0) ? S3 : S4;
            default: next_state = S0;
        endcase
    end

    // State registers
    always @(posedge clk or posedge reset) begin
        if (reset)
            state <= S0;
        else
            state <= next_state;
    end

    // Output logic
    always @(*) begin
        case (state)
            S3, S4: z = 1'b1;
            default: z = 1'b0;
        endcase
    end

endmodule

module top_module (
    input clk,
    input reset,
    input x,
    output reg z
);

    reg [2:0] y, Y; // Present state and next state

    // State encoding
    parameter S0 = 3'b000;
    parameter S1 = 3'b001;
    parameter S2 = 3'b010;
    parameter S3 = 3'b011;
    parameter S4 = 3'b100;

    // State transition logic
    always @(*) begin
        case (y)
            S0: Y = (x == 0) ? S0 : S1;
            S1: Y = (x == 0) ? S1 : S4;
            S2: Y = (x == 0) ? S2 : S1;
            S3: Y = (x == 0) ? S1 : S2;
            S4: Y = (x == 0) ? S3 : S4;
            default: Y = S0;
        endcase
    end

    // Output logic
    always @(*) begin
        case (y)
            S3, S4: z = 1;
            default: z = 0;
        endcase
    end

    // State register
    always @(posedge clk) begin
        if (reset)
            y <= S0;
        else
            y <= Y;
    end

endmodule

module top_module (
    input clk,
    input reset,
    input x,
    output reg z
);

    reg [2:0] state, next_state;

    // State encoding
    localparam S0 = 3'b000;
    localparam S1 = 3'b001;
    localparam S2 = 3'b010;
    localparam S3 = 3'b011;
    localparam S4 = 3'b100;

    // State transition logic
    always @(*) begin
        case (state)
            S0: next_state = x ? S1 : S0;
            S1: next_state = x ? S4 : S1;
            S2: next_state = x ? S1 : S2;
            S3: next_state = x ? S2 : S1;
            S4: next_state = x ? S4 : S3;
            default: next_state = S0;
        endcase
    end

    // Output logic
    always @(*) begin
        case (state)
            S3: z = 1;
            S4: z = 1;
            default: z = 0;
        endcase
    end

    // State register
    always @(posedge clk) begin
        if (reset)
            state <= S0;
        else
            state <= next_state;
    end

endmodule

module top_module (
    input clk,
    input reset,
    input x,
    output reg z
);

    reg [2:0] state, next_state;

    // State encoding
    localparam S0 = 3'b000;
    localparam S1 = 3'b001;
    localparam S2 = 3'b010;
    localparam S3 = 3'b011;
    localparam S4 = 3'b100;

    // State transition
    always @(*) begin
        case (state)
            S0: next_state = (x) ? S1 : S0;
            S1: next_state = (x) ? S4 : S1;
            S2: next_state = (x) ? S1 : S2;
            S3: next_state = (x) ? S2 : S1;
            S4: next_state = (x) ? S4 : S3;
            default: next_state = S0;
        endcase
    end

    // Output logic
    always @(*) begin
        case (state)
            S3: z = 1;
            S4: z = 1;
            default: z = 0;
        endcase
    end

    // State flip-flops with synchronous reset
    always @(posedge clk) begin
        if (reset)
            state <= S0;
        else
            state <= next_state;
    end

endmodule

module top_module (
	input clk,
	input reset,
	input x,
	output reg z
);

    reg [2:0] state, next_state;

    // State encoding
    localparam S0 = 3'b000,
               S1 = 3'b001,
               S2 = 3'b010,
               S3 = 3'b011,
               S4 = 3'b100;

    // State transition
    always @(*) begin
        case (state)
            S0: next_state = (x) ? S1 : S0;
            S1: next_state = (x) ? S4 : S1;
            S2: next_state = (x) ? S1 : S2;
            S3: next_state = (x) ? S2 : S1;
            S4: next_state = (x) ? S4 : S3;
            default: next_state = S0;
        endcase
    end

    // State registration
    always @(posedge clk) begin
        if (reset) begin
            state <= S0;
        end else begin
            state <= next_state;
        end
    end

    // Output logic
    always @(*) begin
        case (state)
            S3: z = 1;
            S4: z = 1;
            default: z = 0;
        endcase
    end

endmodule

module top_module (
    input clk,
    input reset,
    input x,
    output reg z
);

    reg [2:0] state, next_state;

    // State encoding
    localparam S0 = 3'b000,
               S1 = 3'b001,
               S2 = 3'b010,
               S3 = 3'b011,
               S4 = 3'b100;

    // State transition logic (next state logic)
    always @(*) begin
        case (state)
            S0: begin
                if (x == 0)
                    next_state = S0;
                else
                    next_state = S1;
            end
            S1: begin
                if (x == 0)
                    next_state = S1;
                else
                    next_state = S4;
            end
            S2: begin
                if (x == 0)
                    next_state = S2;
                else
                    next_state = S1;
            end
            S3: begin
                if (x == 0)
                    next_state = S1;
                else
                    next_state = S2;
            end
            S4: begin
                if (x == 0)
                    next_state = S3;
                else
                    next_state = S4;
            end
            default: next_state = S0;
        endcase
    end

    // State register logic
    always @(posedge clk) begin
        if (reset)
            state <= S0;
        else
            state <= next_state;
    end

    // Output logic
    always @(*) begin
        case (state)
            S3, S4: z = 1;
            default: z = 0;
        endcase
    end

endmodule

module top_module (
	input clk,
	input reset,
	input x,
	output reg z
);

	reg [2:0] state, next_state;

	// State encoding
	localparam S0 = 3'b000,
	           S1 = 3'b001,
	           S2 = 3'b010,
	           S3 = 3'b011,
	           S4 = 3'b100;

	// State transition logic
	always @(*) begin
		case (state)
			S0: next_state = (x ? S1 : S0);
			S1: next_state = (x ? S4 : S1);
			S2: next_state = (x ? S1 : S2);
			S3: next_state = (x ? S2 : S1);
			S4: next_state = (x ? S4 : S3);
			default: next_state = S0;
		endcase
	end

	// Output logic
	always @(*) begin
		case (state)
			S0, S1, S2: z = 0;
			S3, S4: z = 1;
			default: z = 0; // default case to handle unused states
		endcase
	end

	// State flip-flops with synchronous reset
	always @(posedge clk) begin
		if (reset) begin
			state <= S0;
		end else begin
			state <= next_state;
		end
	end

endmodule

module top_module (
    input clk,
    input reset,
    input x,
    output reg z
);

    reg [2:0] state, next_state;

    // State Encoding
    localparam S0 = 3'b000,
               S1 = 3'b001,
               S2 = 3'b010,
               S3 = 3'b011,
               S4 = 3'b100;

    // State Transition
    always @(*) begin
        case (state)
            S0: next_state = x ? S1 : S0;
            S1: next_state = x ? S4 : S1;
            S2: next_state = x ? S1 : S2;
            S3: next_state = x ? S2 : S1;
            S4: next_state = x ? S4 : S3;
            default: next_state = S0;
        endcase
    end

    // Sequential Logic
    always @(posedge clk) begin
        if (reset)
            state <= S0;
        else
            state <= next_state;
    end

    // Output Logic
    always @(*) begin
        case (state)
            S0: z = 0;
            S1: z = 0;
            S2: z = 0;
            S3: z = 1;
            S4: z = 1;
            default: z = 0;
        endcase
    end

endmodule

module top_module (
    input clk,
    input reset,
    input x,
    output reg z
);

    reg [2:0] state, next_state;

    // State encoding
    localparam S0 = 3'b000,
               S1 = 3'b001,
               S2 = 3'b010,
               S3 = 3'b011,
               S4 = 3'b100;

    // State transition
    always @(posedge clk) begin
        if (reset)
            state <= S0;
        else
            state <= next_state;
    end

    // Next state logic and output logic
    always @(*) begin
        case (state)
            S0: begin
                if (x)
                    next_state = S1;
                else
                    next_state = S0;
                z = 0;
            end
            S1: begin
                if (x)
                    next_state = S4;
                else
                    next_state = S1;
                z = 0;
            end
            S2: begin
                if (x)
                    next_state = S1;
                else
                    next_state = S2;
                z = 0;
            end
            S3: begin
                if (x)
                    next_state = S2;
                else
                    next_state = S1;
                z = 1;
            end
            S4: begin
                if (x)
                    next_state = S4;
                else
                    next_state = S3;
                z = 1;
            end
            default: begin
                next_state = S0;
                z = 0;
            end
        endcase
    end

endmodule

module top_module (
    input clk,
    input reset,
    input x,
    output reg z
);

    reg [2:0] state, next_state;

    // State encoding
    localparam S0 = 3'b000,
               S1 = 3'b001,
               S2 = 3'b010,
               S3 = 3'b011,
               S4 = 3'b100;

    // State transition on clock edge
    always @(posedge clk) begin
        if (reset) begin
            state <= S0; // Synchronous reset to state 000
        end else begin
            state <= next_state;
        end
    end

    // Next state logic
    always @(*) begin
        case (state)
            S0: if (x) next_state = S1; else next_state = S0;
            S1: if (x) next_state = S4; else next_state = S1;
            S2: if (x) next_state = S1; else next_state = S2;
            S3: if (x) next_state = S2; else next_state = S1;
            S4: if (x) next_state = S4; else next_state = S3;
            default: next_state = S0;
        endcase
    end

    // Output logic
    always @(*) begin
        case (state)
            S3, S4: z = 1;
            default: z = 0;
        endcase
    end

endmodule


module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);

    // State Encoding
    typedef enum reg [2:0] {
        STATE_A,
        STATE_B,
        STATE_C,
        STATE_D,
        STATE_E,
        STATE_F,
        STATE_G
    } state_t;

    state_t current_state, next_state;

    // FSM Sequential block
    always @(posedge clk or negedge resetn) begin
        if (!resetn)
            current_state <= STATE_A;
        else
            current_state <= next_state;
    end

    // FSM Combinational block
    always @(*) begin
        // Default state transitions
        next_state = current_state;
        f = 0;
        g = 0;

        case (current_state)
            STATE_A: begin
                if (!resetn) begin
                    next_state = STATE_A;
                end else begin
                    f = 1;
                    next_state = STATE_B;
                end
            end
            STATE_B: begin
                if (x) begin
                    next_state = STATE_C;
                end else begin
                    next_state = STATE_B;
                end
            end
            STATE_C: begin
                if (!x) begin
                    next_state = STATE_D;
                end else begin
                    next_state = STATE_B;
                end
            end
            STATE_D: begin
                if (x) begin
                    next_state = STATE_E;
                end else begin
                    next_state = STATE_B;
                end
            end
            STATE_E: begin
                g = 1;
                next_state = STATE_F;
            end
            STATE_F: begin
                g = 1;
                if (y) begin
                    next_state = STATE_G;
                end else begin
                    next_state = STATE_F;
                end
            end
            STATE_G: begin
                g = 1;
                // Permanent state until reset
                next_state = STATE_G;
            end
            default: next_state = STATE_A;
        endcase
    end

endmodule

module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);

    // Define states using a localparam for better readability
    typedef enum reg [2:0] {
        STATE_A = 3'b000,
        STATE_B = 3'b001,
        STATE_C = 3'b010,
        STATE_D = 3'b011,
        STATE_E = 3'b100,
        STATE_F = 3'b101
    } state_t;

    reg [2:0] current_state, next_state;
    reg [1:0] y_check_count; // Counter to check y for two cycles

    // Synchronous state transition
    always @(posedge clk) begin
        if (!resetn) begin
            current_state <= STATE_A;
            f <= 0;
            g <= 0;
            y_check_count <= 0;
        end else begin
            current_state <= next_state;
        end
    end

    // Next state logic and output logic
    always @(*) begin
        // Default assignments
        next_state = current_state;
        f = 0;
        g = (current_state == STATE_E) || (current_state == STATE_F);

        case (current_state)
            STATE_A: begin
                if (resetn) begin
                    next_state = STATE_B;
                    f = 1; // Set f to 1 for one cycle
                end
            end

            STATE_B: begin
                if (x) next_state = STATE_C;
            end

            STATE_C: begin
                if (!x) next_state = STATE_D;
            end

            STATE_D: begin
                if (x) next_state = STATE_E;
            end

            STATE_E: begin
                // Maintain g = 1 and start checking y
                if (y) begin
                    next_state = STATE_F;
                end else begin
                    if (y_check_count < 2) begin
                        next_state = STATE_E;
                    end else begin
                        next_state = STATE_A; // return to start if y doesn't become 1 in time
                    end
                end
            end

            STATE_F: begin
                // Stay with g = 1
            end
        endcase
    end

    // Synchronous y check counting
    always @(posedge clk) begin
        if (current_state == STATE_E) begin
            y_check_count <= y_check_count + 1;
        end else begin
            y_check_count <= 0;
        end
    end

endmodule

module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);

    typedef enum reg [2:0] {
        STATE_A = 3'b000,
        STATE_B = 3'b001,
        STATE_C = 3'b010,
        STATE_D = 3'b011,
        STATE_E = 3'b100,
        STATE_F = 3'b101
    } state_t;

    reg [2:0] state, next_state;

    always @(posedge clk) begin
        if (!resetn)
            state <= STATE_A;
        else
            state <= next_state;
    end

    always @(*) begin
        next_state = state;  // Default state is the same unless overridden
        f = 0;
        g = 0;
        case (state)
            STATE_A: begin
                f = 0;
                if (resetn)  // If reset is de-asserted
                    next_state = STATE_B;
            end

            STATE_B: begin
                f = 1;
                next_state = STATE_C;
            end

            STATE_C: begin
                if (x == 1)
                    next_state = STATE_D;
            end

            STATE_D: begin
                if (x == 0)
                    next_state = STATE_E;
                else if (x != 1)
                    next_state = STATE_C;
            end

            STATE_E: begin
                if (x == 1) begin
                    g = 1;
                    next_state = STATE_F;
                end
                else if (x != 0)
                    next_state = STATE_C;
            end

            STATE_F: begin
                g = 1;
                if (y == 1)
                    g = 1;
                else if (y == 0)
                    next_state = STATE_A;
            end
        endcase
    end
endmodule

module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);

    // State definitions
    typedef enum logic [2:0] {
        STATE_A,        // Beginning state after reset
        STATE_B,        // Output f = 1 for one clock cycle
        STATE_C,        // Monitoring x input for 1
        STATE_D,        // Monitoring x input for 0
        STATE_E,        // Monitoring x input for 1 (to complete 1,0,1)
        STATE_F,        // Monitoring y for 1 within two cycles
        STATE_G         // Permanent states after y check
    } state_t;

    state_t state, next_state;
    logic [1:0] y_counter;   // Counter for y response time

    // State Transition Logic
    always_ff @(posedge clk or negedge resetn) begin
        if (!resetn) begin
            state <= STATE_A;
            y_counter <= 2'b00;
            g <= 1'b0;
        end else begin
            state <= next_state;
            if (state == STATE_F) begin
                y_counter <= (y_counter == 2'b10) ? 2'b10 : y_counter + 1;
            end else begin
                y_counter <= 2'b00;
            end
        end
    end

    // Next State Logic
    always_comb begin
        next_state = state;
        f = 1'b0; // Default value for f
        case (state)
            STATE_A: begin
                next_state = STATE_B;
            end
            STATE_B: begin
                f = 1'b1; // Set f to 1 for one clock cycle
                next_state = STATE_C;
            end
            STATE_C: begin
                if (x) next_state = STATE_D;
            end
            STATE_D: begin
                if (!x) next_state = STATE_E;
            end
            STATE_E: begin
                if (x) next_state = STATE_F;
            end
            STATE_F: begin
                if (y) next_state = STATE_G;
                else if (y_counter == 2'b01) next_state = STATE_A; // If y is not 1 within two cycles
            end
            STATE_G: begin
                g = 1'b1; // Maintain g = 1 permanently
            end
        endcase
    end

endmodule

module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);

    // State definitions
    typedef enum reg [2:0] {
        STATE_A = 0,
        STATE_B = 1,
        STATE_C = 2,
        STATE_D = 3,
        STATE_E = 4,
        STATE_F = 5,
        STATE_G = 6
    } state_t;

    state_t state, next_state;
    reg [1:0] y_wait_counter;

    // State transition and output logic
    always @(posedge clk) begin
        if (!resetn) begin
            state <= STATE_A;
            f <= 0;
            g <= 0;
            y_wait_counter <= 0;
        end else begin
            state <= next_state;
        end
    end

    // Next state logic
    always @(*) begin
        // Default next state
        next_state = state;
        case (state)
            STATE_A: begin
                f = 0;
                g = 0;
                if (resetn) begin
                    next_state = STATE_B;
                    f = 1;
                end
            end
            STATE_B: begin
                f = 0;
                if (x == 1) next_state = STATE_C;
            end
            STATE_C: begin
                if (x == 0) next_state = STATE_D;
            end
            STATE_D: begin
                if (x == 1) begin
                    next_state = STATE_E;
                    g = 1;
                end
            end
            STATE_E: begin
                g = 1;
                if (y == 1) begin
                    next_state = STATE_F;  // Maintain g = 1 permanently
                end else if (y_wait_counter == 2) begin
                    next_state = STATE_G;
                end else begin
                    next_state = STATE_E;
                end
            end
            STATE_F: begin
                g = 1;
                next_state = STATE_F; // permanent g = 1 until reset
            end
            STATE_G: begin
                g = 0;
                next_state = STATE_G; // permanent g = 0 until reset
            end
        endcase
    end

    // Count the two clock cycles for checking y
    always @(posedge clk) begin
        if (state == STATE_E && y != 1) begin
            y_wait_counter <= y_wait_counter + 1;
        end else begin
            y_wait_counter <= 0;
        end
    end

endmodule

module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);

    typedef enum logic [2:0] {
        STATE_A = 3'b000,
        STATE_B = 3'b001,
        STATE_C = 3'b010,
        STATE_D = 3'b011,
        STATE_E = 3'b100,
        STATE_F = 3'b101,
        STATE_G = 3'b110
    } state_t;

    state_t current_state, next_state;
    reg [1:0] y_counter;

    always_ff @(posedge clk or negedge resetn) begin
        if (!resetn) begin
            current_state <= STATE_A;
            f <= 0;
            g <= 0;
            y_counter <= 0;
        end else begin
            current_state <= next_state;
            if (current_state == STATE_F || current_state == STATE_G)
                g <= current_state == STATE_F;
        end
    end

    always_comb begin
        next_state = current_state; // default
        f = 0;

        case (current_state)
            STATE_A: begin
                if (!resetn) begin
                    next_state = STATE_B;
                    f = 1;
                end
            end
            STATE_B: begin
                if (x) next_state = STATE_C;
            end
            STATE_C: begin
                if (!x) next_state = STATE_D;
            end
            STATE_D: begin
                if (x) next_state = STATE_E;
            end
            STATE_E: begin
                next_state = STATE_F;
                g = 1;
                y_counter = 0;
            end
            STATE_F: begin
                if (y) begin
                    next_state = STATE_G;
                end else if (y_counter == 2) begin
                    next_state = STATE_A;
                end else begin
                    y_counter = y_counter + 1;
                end
            end
            STATE_G: begin
                g = 1; // Permanently keep g = 1 until reset
            end
            default: next_state = STATE_A;
        endcase
    end
endmodule

module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);

    // State Encoding
    typedef enum reg [2:0] {
        A,    // Reset state
        B,    // f=1 for one clock cycle
        C,    // Wait for x = 1,0,1 sequence
        D,    // Sequence detected, wait for y = 1
        E,    // Permanent g = 1
        F     // Permanent g = 0
    } state_t;

    state_t current_state, next_state;
    reg [1:0] y_counter; // To count up to 2 cycles while monitoring y

    // State Transition
    always @(posedge clk) begin
        if (!resetn) begin
            current_state <= A;
            y_counter <= 2'b00;
        end else begin
            current_state <= next_state;
            if (current_state == D && next_state == D)
                y_counter <= y_counter + 1'b1; // Increment y_counter only in state D
            else
                y_counter <= 2'b00; // Reset counter in other states
        end
    end

    // Next State Logic
    always @(*) begin
        f = 1'b0;
        g = 1'b0;
        case (current_state)
            A: begin
                next_state = B;
            end
            B: begin
                f = 1'b1;
                next_state = C;
            end
            C: begin
                if (x == 1'b1) begin
                    next_state = C; // Waiting for 0 after 1
                end else if (x == 1'b0 && current_state == C) begin
                    next_state = (x == 1'b1) ? D : C; // If sequence 101 detected
                end else begin
                    next_state = C;
                end
            end
            D: begin
                g = 1'b1;
                if (y == 1'b1) begin
                    next_state = E;
                end else if (y_counter == 2'b10) begin // If two cycles passed without y = 1
                    next_state = F;
                end else begin
                    next_state = D;
                end
            end
            E: begin
                g = 1'b1; // Maintain g = 1
                next_state = E;
            end
            F: begin
                g = 1'b0; // Maintain g = 0
                next_state = F;
            end
            default: next_state = A;
        endcase
    end

endmodule

module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);

    // Define state encoding
    typedef enum reg [2:0] {
        STATE_A = 3'b000, // Beginning state
        STATE_B = 3'b001, // After f = 1
        STATE_C = 3'b010, // Detected x = 1
        STATE_D = 3'b011, // Detected x = 0
        STATE_E = 3'b100, // Detected x = 1, 0, 1
        STATE_F = 3'b101, // Check y within 2 cycles
        STATE_G = 3'b110  // Set g = 1 permanently
    } state_t;

    state_t current_state, next_state;
    reg [1:0] y_counter; // Counter for checking y

    always @(posedge clk) begin
        if (!resetn) begin
            current_state <= STATE_A;
            y_counter <= 2'b00;
            f <= 1'b0;
            g <= 1'b0;
        end else begin
            current_state <= next_state;
        end
    end

    always @(*) begin
        // Default values
        next_state = current_state;
        f = 1'b0;
        g = 1'b0;

        case (current_state)
            STATE_A: begin
                if (!resetn) begin
                    next_state = STATE_A; // Stay in state A if reset is asserted
                end else begin
                    next_state = STATE_B; // Move to state B when reset is de-asserted
                end
            end
            STATE_B: begin
                f = 1'b1; // Set f = 1 for one clock cycle
                next_state = STATE_C; // Move to state C
            end
            STATE_C: begin
                if (x == 1'b1) begin
                    next_state = STATE_D;
                end
            end
            STATE_D: begin
                if (x == 1'b0) begin
                    next_state = STATE_E;
                end
            end
            STATE_E: begin
                if (x == 1'b1) begin
                    next_state = STATE_F;
                end
            end
            STATE_F: begin
                g = 1'b1;
                if (y == 1'b1) begin
                    next_state = STATE_G; // Maintain g = 1 permanently
                end else begin
                    y_counter = y_counter + 1;
                    if (y_counter == 2'b10) begin
                        g = 1'b0; // Set g = 0 permanently
                        next_state = STATE_G;
                    end
                end
            end
            STATE_G: begin
                // g = 1 or g = 0 permanently until reset
            end
        endcase
    end

endmodule

module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);
    // State declarations
    typedef enum reg [2:0] {
        STATE_A = 3'b000,
        STATE_B = 3'b001,
        STATE_C = 3'b010,
        STATE_D = 3'b011,
        STATE_E = 3'b100,
        STATE_F = 3'b101
    } state_t;

    state_t state, next_state;
    reg [1:0] y_counter;

    // State transition and output logic
    always @(posedge clk or negedge resetn) begin
        if (!resetn) begin
            state <= STATE_A;
            f <= 0;
            g <= 0;
            y_counter <= 0;
        end else begin
            state <= next_state;
            case (state)
                STATE_A: f <= 0;
                STATE_B: f <= 1;
                STATE_C, STATE_D, STATE_E: f <= 0;
                STATE_F: g <= 0;
                default: ;
            endcase
        end
    end

    // Next state logic
    always @(*) begin
        next_state = state; // Default to hold current state
        case (state)
            STATE_A: begin
                if (!resetn)
                    next_state = STATE_A;
                else
                    next_state = STATE_B;
            end
            STATE_B: begin
                next_state = STATE_C;
            end
            STATE_C: begin
                if (x)
                    next_state = STATE_D;
                else
                    next_state = STATE_C;
            end
            STATE_D: begin
                if (x)
                    next_state = STATE_E;
                else
                    next_state = STATE_C;
            end
            STATE_E: begin
                if (x)
                    next_state = STATE_F;
                else
                    next_state = STATE_C;
            end
            STATE_F: begin
                if (y || y_counter == 2'h2) begin
                    next_state = STATE_F;
                    g <= 1;
                end else begin
                    y_counter = y_counter + 1;
                    if (y) begin
                        g <= 1;
                        next_state = STATE_F;
                    end else if (y_counter == 2'h1) begin
                        g <= 0;
                    end
                end
            end
            default: next_state = STATE_A;
        endcase
    end
endmodule

module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);

    // State declarations
    typedef enum reg [2:0] {
        STATE_A = 3'b000,
        STATE_B = 3'b001,
        STATE_C = 3'b010,
        STATE_D = 3'b011,
        STATE_E = 3'b100,
        STATE_F = 3'b101,
        STATE_G = 3'b110
    } state_t;

    state_t current_state, next_state;

    // Sequential logic for state transition
    always @(posedge clk) begin
        if (!resetn) begin
            current_state <= STATE_A;
        end else begin
            current_state <= next_state;
        end
    end

    // Combinational logic for next state and output logic
    always @(*) begin
        // Default values
        next_state = current_state;
        f = 1'b0;
        g = 1'b0;

        case (current_state)
            STATE_A: begin
                f = 1'b0;
                g = 1'b0;
                if (resetn) begin
                    next_state = STATE_B;
                end
            end
            STATE_B: begin
                f = 1'b1; // Set f to 1 for one clock cycle
                next_state = STATE_C;
            end
            STATE_C: begin
                if (x == 1'b1) begin
                    next_state = STATE_D;
                end
            end
            STATE_D: begin
                if (x == 1'b0) begin
                    next_state = STATE_E;
                end else begin
                    next_state = STATE_C; // Return to C if sequence breaks
                end
            end
            STATE_E: begin
                if (x == 1'b1) begin
                    next_state = STATE_F;
                end else begin
                    next_state = STATE_C; // Return to C if sequence breaks
                end
            end
            STATE_F: begin
                g = 1'b1; // Set g to 1
                if (y == 1'b1) begin
                    next_state = STATE_G; // g = 1 permanently
                end else begin
                    next_state = STATE_G;
                end
            end
            STATE_G: begin
                g = 1'b1;
                // Remain in this state if y is seen as 1 within 2 clock cycles
            end
            default: begin
                next_state = STATE_A;
            end
        endcase
    end

endmodule

module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);

    // State encoding
    typedef enum reg [2:0] {
        STATE_A       = 3'b000,
        STATE_MONITOR = 3'b001,
        STATE_G_WAIT  = 3'b010,
        STATE_G_CHECK = 3'b011,
        STATE_G_SET   = 3'b100,
        STATE_G_RESET = 3'b101
    } state_t;

    state_t current_state, next_state;
    reg [1:0] x_pattern;
    reg [1:0] y_counter;

    // State transition logic
    always @(*) begin
        next_state = current_state;
        f = 0;
        case (current_state)
            STATE_A: begin
                f = 1; // Set f for one clock cycle when reset is de-asserted
                if (~resetn)
                    next_state = STATE_MONITOR;
            end
            STATE_MONITOR: begin
                if (x_pattern == 2'b101)
                    next_state = STATE_G_WAIT;
            end
            STATE_G_WAIT: begin
                if (x)
                    next_state = STATE_G_CHECK;
            end
            STATE_G_CHECK: begin
                g = 1;
                if (y) begin
                    next_state = STATE_G_SET;
                end else if (y_counter == 2) begin
                    next_state = STATE_G_RESET;
                end
            end
            STATE_G_SET: begin
                g = 1; // Maintain g = 1 permanently
            end
            STATE_G_RESET: begin
                g = 0; // Maintain g = 0 permanently
            end
        endcase
    end

    // State register update
    always @(posedge clk) begin
        if (~resetn) begin
            current_state <= STATE_A;
            x_pattern <= 2'b00;
            y_counter <= 0;
        end else begin
            current_state <= next_state;
            if (current_state == STATE_MONITOR) begin
                x_pattern <= {x_pattern[0], x};
            end
            if (current_state == STATE_G_CHECK) begin
                y_counter <= y_counter + 1;
            end else begin
                y_counter <= 0;
            end
        end
    end
endmodule

module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);

    // State encoding
    typedef enum logic [2:0] {
        STATE_A = 3'b000,
        STATE_B = 3'b001,
        STATE_C = 3'b010,
        STATE_D = 3'b011,
        STATE_E = 3'b100,
        STATE_F = 3'b101,
        STATE_G = 3'b110
    } state_t;

    state_t current_state, next_state;
    logic [1:0] y_counter;

    always_ff @(posedge clk) begin
        if (!resetn)
            current_state <= STATE_A;
        else
            current_state <= next_state;
    end

    always_comb begin
        // Defaults
        next_state = current_state;
        f = 0;
        g = 0;

        case (current_state)
            STATE_A: begin
                f = 0;
                g = 0;
                if (!resetn)
                    next_state = STATE_A;
                else
                    next_state = STATE_B;
            end

            STATE_B: begin
                f = 1;
                if (resetn)
                    next_state = STATE_C;
            end

            STATE_C: begin
                f = 0;
                if (x)
                    next_state = STATE_D;
                else
                    next_state = STATE_C;
            end

            STATE_D: begin
                if (!x)
                    next_state = STATE_E;
                else
                    next_state = STATE_C;
            end

            STATE_E: begin
                if (x)
                    next_state = STATE_F;
                else
                    next_state = STATE_C;
            end

            STATE_F: begin
                g = 1;
                if (y)
                    next_state = STATE_G; // Set g permamently to 1 if y=1
                else
                    next_state = STATE_F;
            end

            STATE_G: begin
                g = 1;
                y_counter = 0;
                while (y_counter < 2) begin
                    if (y)
                        next_state = STATE_G; // Maintain g = 1 permanently
                    else
                        y_counter = y_counter + 1;
                end
                if (y_counter == 2)
                    next_state = STATE_A; // Timeout reached, reset to state A
            end

            default: begin
                next_state = STATE_A;
            end
        endcase
    end

endmodule

module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);

    typedef enum reg [2:0] {
        STATE_A,
        STATE_B,
        STATE_C,
        STATE_D,
        STATE_E,
        STATE_F,
        STATE_G,
        STATE_H
    } state_t;

    state_t current_state, next_state;

    always @(posedge clk or negedge resetn) begin
        if (!resetn) begin
            current_state <= STATE_A;
        end else begin
            current_state <= next_state;
        end
    end

    always @* begin
        next_state = current_state;
        f = 0;
        g = 0;

        case (current_state)
            STATE_A: begin
                if (!resetn)
                    next_state = STATE_A;
                else
                    next_state = STATE_B;
            end

            STATE_B: begin
                f = 1;
                next_state = STATE_C;
            end

            STATE_C: begin
                if (x)
                    next_state = STATE_D;
            end

            STATE_D: begin
                if (!x)
                    next_state = STATE_E;
            end

            STATE_E: begin
                if (x)
                    next_state = STATE_F;
            end

            STATE_F: begin
                g = 1;
                if (y)
                    next_state = STATE_H;
                else
                    next_state = STATE_G;
            end

            STATE_G: begin
                g = 1;
                if (y)
                    next_state = STATE_H;
                // if y is not 1 after this cycle, g becomes 0 permanently
                else
                    next_state = STATE_A;
            end

            STATE_H: begin
                g = 1;
            end

            default: begin
                next_state = STATE_A;
            end
        endcase
    end

endmodule

module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);

    // State encoding
    typedef enum reg [2:0] {
        A = 3'b000,
        B = 3'b001,
        C = 3'b010,
        D = 3'b011,
        E = 3'b100,
        F = 3'b101
    } state_t;

    state_t current_state, next_state;
    reg [1:0] y_check_count;

    always @(posedge clk or negedge resetn) begin
        if (!resetn)
            current_state <= A;
        else
            current_state <= next_state;
    end

    always @(*) begin
        // Default transition
        next_state = current_state;
        f = 1'b0;

        case (current_state)
            A: begin
                f = 1'b0;
                g = 1'b0;
                if (resetn)
                    next_state = B;
            end
            B: begin
                f = 1'b1;
                g = 1'b0;
                next_state = C;
            end
            C: begin
                f = 1'b0;
                if (x)
                    next_state = D;
            end
            D: begin
                if (!x)
                    next_state = E;
            end
            E: begin
                if (x)
                    next_state = F;
            end
            F: begin
                g = 1'b1;
                if (y_check_count < 2) begin
                    if (y)
                        next_state = F;
                    else
                        y_check_count = y_check_count + 1;
                end else begin
                    g = 1'b0;
                end
            end
        endcase
    end

    always @(posedge clk or negedge resetn) begin
        if (!resetn)
            y_check_count <= 0;
        else if (current_state == F)
            y_check_count <= y_check_count;
        else
            y_check_count <= 0;
    end

endmodule

module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);

    // State encoding
    typedef enum logic [2:0] {
        STATE_A = 3'b000,
        STATE_B = 3'b001,
        STATE_C = 3'b010,
        STATE_D = 3'b011,
        STATE_E = 3'b100,
        STATE_F = 3'b101
    } state_t;

    state_t state, next_state;
    reg [1:0] y_counter;

    // State transition and output logic
    always @(posedge clk) begin
        if (!resetn) begin
            state <= STATE_A;
            f <= 1'b0;
            g <= 1'b0;
            y_counter <= 2'b00;
        end else begin
            state <= next_state;

            case (next_state)
                STATE_A: begin
                    f <= 1'b0;
                    g <= 1'b0;
                    y_counter <= 2'b00;
                end
                STATE_B: begin
                    f <= 1'b1; // Set f to 1 for one clock cycle
                end
                STATE_D, STATE_E: begin
                    f <= 1'b0; // Ensure f is cleared after STATE_B
                end
                STATE_F: begin
                    g <= 1'b0; // After reset, ensure g is cleared
                end
                default: begin
                    // No default action needed
                end
            endcase
        end
    end

    // Next state logic
    always @(*) begin
        case (state)
            STATE_A: begin
                next_state = (!resetn) ? STATE_A : STATE_B;
            end
            STATE_B: begin
                next_state = STATE_C;
            end
            STATE_C: begin
                if (x)
                    next_state = STATE_D;
                else
                    next_state = STATE_C;
            end
            STATE_D: begin
                if (!x)
                    next_state = STATE_E;
                else
                    next_state = STATE_D;
            end
            STATE_E: begin
                if (x)
                    next_state = STATE_F;
                else
                    next_state = STATE_C;
            end
            STATE_F: begin
                next_state = y_counter < 2 && !y ? STATE_F : STATE_A;
            end
            default: next_state = STATE_A;
        endcase
    end

    // Output g update logic based on y input
    always @(posedge clk) begin
        if (state == STATE_F) begin
            if (!y) begin
                if (y_counter == 2'b01)
                    g <= 1'b0; // y did not become 1 within two cycles
                y_counter <= y_counter + 1;
            end else begin
                g <= 1'b1; // y became 1 within two cycles
                y_counter <= 2'b00;
            end
        end
    end

endmodule

module top_module (
	input clk,
	input resetn,
	input x,
	input y,
	output reg f,
	output reg g
);

	// State declaration
	typedef enum reg [2:0] {
		STATE_A,
		STATE_B,
		STATE_C,
		STATE_D,
		STATE_E,
		STATE_F,
		STATE_G,
		STATE_H
	} state_t;

	state_t current_state, next_state;
	reg [1:0] x_seq;  // To track the x sequence

	// State transition and output logic
	always @(posedge clk) begin
		if (!resetn) begin
			current_state <= STATE_A;
			f <= 0;
			g <= 0;
			x_seq <= 2'b00;
		end else begin
			current_state <= next_state;
		end
	end

	always @(*) begin
		// Default assignments
		next_state = current_state;
		f = 0;
		g = 0;

		case (current_state)
			STATE_A: begin
				if (resetn) begin
					next_state = STATE_B;
					f = 1;
				end
			end
			STATE_B: begin
				next_state = STATE_C;
			end
			STATE_C: begin
				if (x)
					x_seq[1] <= 1;
				next_state = STATE_D;
			end
			STATE_D: begin
				if (!x)
					x_seq[0] <= 0;
				next_state = STATE_E;
			end
			STATE_E: begin
				if (x_seq == 2'b11 && x) begin
					next_state = STATE_F;
					g = 1;
				end else begin
					x_seq <= {x_seq[0], x};
					next_state = STATE_C;
				end
			end
			STATE_F: begin
				if (y) begin
					next_state = STATE_H;
					g = 1;  // Permanently
				end else begin
					next_state = STATE_G;
				end
			end
			STATE_G: begin
				if (!y) begin
					next_state = STATE_H;
					g = 0;  // Permanently
				end
			end
			STATE_H: begin
				g = 1;
			end
		endcase
	end

endmodule

module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);

    // State encoding
    typedef enum reg [3:0] {
        STATE_A       = 4'd0,
        STATE_F_SET   = 4'd1,
        STATE_X1      = 4'd2,
        STATE_X10     = 4'd3,
        STATE_X101    = 4'd4,
        STATE_G1_WAIT = 4'd5,
        STATE_CHECK_Y1 = 4'd6,
        STATE_CHECK_Y2 = 4'd7,
        STATE_G0      = 4'd8
    } state_t;

    state_t current_state, next_state;
    reg [1:0] y_count;

    // Sequential logic for state transitions
    always @(posedge clk) begin
        if (!resetn) begin
            current_state <= STATE_A;
        end else begin
            current_state <= next_state;
        end
    end

    // Combinational logic for next state and outputs
    always @(*) begin
        // Default outputs
        f = 1'b0;
        next_state = current_state;

        case (current_state)
            STATE_A: begin
                if (!resetn)
                    next_state = STATE_A;
                else
                    next_state = STATE_F_SET;
            end
            STATE_F_SET: begin
                f = 1'b1;
                next_state = STATE_X1;
            end
            STATE_X1: begin
                if (x == 1'b1)
                    next_state = STATE_X10;
            end
            STATE_X10: begin
                if (x == 1'b0)
                    next_state = STATE_X101;
                else
                    next_state = STATE_X1;
            end
            STATE_X101: begin
                if (x == 1'b1) begin
                    next_state = STATE_G1_WAIT;
                    g = 1'b1;
                end else begin
                    next_state = STATE_X1;
                end
            end
            STATE_G1_WAIT: begin
                g = 1'b1;
                y_count = 0;
                next_state = STATE_CHECK_Y1;
            end
            STATE_CHECK_Y1: begin
                g = 1'b1;
                if (y == 1'b1) begin
                    next_state = STATE_G1_WAIT;
                end else begin
                    next_state = STATE_CHECK_Y2;
                end
            end
            STATE_CHECK_Y2: begin
                g = 1'b1;
                if (y == 1'b1) begin
                    next_state = STATE_G1_WAIT;
                end else begin
                    next_state = STATE_G0;
                end
            end
            STATE_G0: begin
                g = 1'b0;
            end
            default: begin
                next_state = STATE_A;
            end
        endcase
    end

endmodule

module top_module (
	input clk,
	input resetn,
	input x,
	input y,
	output reg f,
	output reg g
);

	// State declaration
	typedef enum reg [2:0] {
		STATE_A,        // Initial state
		STATE_B,        // After de-asserted reset, for producing f = 1
		STATE_X1,       // After detecting x = 1
		STATE_X0,       // After detecting x = 0
		STATE_X1_FINAL, // After detecting x = 1, hence 1, 0, 1 pattern is complete
		STATE_Y1,       // After completing 1, 0, 1 pattern and waiting for y = 1
		STATE_Y0        // After completing 1, 0, 1 pattern allowing two clocks to detect y = 1
	} state_t;

	state_t current_state, next_state;
	reg [1:0] y_counter; // To count the 2 clock cycles for y

	// State transition
	always @(posedge clk or negedge resetn) begin
		if (!resetn) begin
			current_state <= STATE_A;
			y_counter <= 0;
		end else begin
			current_state <= next_state;
			if (current_state == STATE_Y1 || current_state == STATE_Y0) begin
				y_counter <= y_counter + 1;
			end else begin
				y_counter <= 0;
			end
		end
	end

	// Next state logic
	always @(*) begin
		next_state = current_state; // Default state stays the same
		case (current_state)
			STATE_A: begin
				if (!resetn) begin
					next_state = STATE_B;
				end
			end
			STATE_B: begin
				next_state = STATE_X1;
			end
			STATE_X1: begin
				if (x) next_state = STATE_X0;
			end
			STATE_X0: begin
				if (!x) next_state = STATE_X1_FINAL;
			end
			STATE_X1_FINAL: begin
				if (x) next_state = STATE_Y1;
			end
			STATE_Y1: begin
				if (y) next_state = STATE_A; // Stay in state if y is 1
				else if (y_counter == 2) next_state = STATE_Y0; // Check two clock cycle wait
			end
			STATE_Y0: begin
				if (y) next_state = STATE_A; // Stay in state if y is 1
			end
		endcase
	end

	// Output logic
	always @(*) begin
		f = 0;
		g = 0;
		case (current_state)
			STATE_B: f = 1;
			STATE_Y1, STATE_Y0: g = 1;
		endcase
	end

endmodule

module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);

    typedef enum reg [2:0] {
        STATE_A = 3'b000,
        STATE_B = 3'b001,
        STATE_C = 3'b010,
        STATE_D = 3'b011,
        STATE_E = 3'b100,
        STATE_F = 3'b101,
        STATE_G = 3'b110
    } state_t;

    state_t state, next_state;
    reg [1:0] y_counter;

    always @(posedge clk) begin
        if (!resetn) begin
            state <= STATE_A;
        end else begin
            state <= next_state;
        end
    end

    always @(*) begin
        // Default values
        next_state = state;
        f = 0;
        g = g;

        case (state)
            STATE_A: begin
                f = 0;
                g = 0;
                if (!resetn) next_state = STATE_A;
                else next_state = STATE_B;
            end

            STATE_B: begin
                f = 1;
                next_state = STATE_C;
            end

            STATE_C: begin
                if (x) next_state = STATE_D;
                else next_state = STATE_B;
            end

            STATE_D: begin
                if (!x) next_state = STATE_E;
            end

            STATE_E: begin
                if (x) next_state = STATE_F;
                else next_state = STATE_B;
            end

            STATE_F: begin
                g = 1;
                y_counter = 0;
                if (y) next_state = STATE_G;
                else next_state = STATE_F;
            end

            STATE_G: begin
                if (y) g = 1;
                else begin
                    y_counter = y_counter + 1;
                    if (y_counter >= 2) g = 0;
                end
                next_state = STATE_G;
            end

            default: next_state = STATE_A;
        endcase
    end

    always @(posedge clk) begin
        if (!resetn) begin
            y_counter <= 0;
        end else if (state == STATE_G && !y) begin
            y_counter <= y_counter + 1;
        end else begin
            y_counter <= 0;
        end
    end

endmodule

module top_module (
    input clk,
    input resetn,
    input x,
    input y,
    output reg f,
    output reg g
);

    typedef enum reg [2:0] {
        STATE_A = 3'b000,
        STATE_B = 3'b001,
        STATE_C = 3'b010,
        STATE_D = 3'b011,
        STATE_E = 3'b100,
        STATE_F = 3'b101
    } state_t;

    state_t current_state, next_state;
    reg [1:0] y_counter;

    always @(posedge clk or negedge resetn) begin
        if (!resetn) begin
            current_state <= STATE_A;
            f <= 0;
            g <= 0;
            y_counter <= 2'b00;
        end else begin
            current_state <= next_state;
        end
    end

    always @(*) begin
        // Default assignments
        next_state = current_state;
        f = 0;
        g = 0;

        case (current_state)
            STATE_A: begin
                if (resetn)
                    next_state = STATE_B;
            end
            STATE_B: begin
                f = 1;
                next_state = STATE_C;
            end
            STATE_C: begin
                if (x)
                    next_state = STATE_D;
            end
            STATE_D: begin
                if (!x)
                    next_state = STATE_E;
            end
            STATE_E: begin
                if (x)
                    next_state = STATE_F;
            end
            STATE_F: begin
                g = 1; // Indicate g should be set in next cycle
                y_counter = y ? 2'b11 : y_counter + 1;

                if (y_counter == 2'b00) // If y is not 1 within 2 cycles
                    g = 0; // set g to 0

                if (y_counter != 2'b00)
                    next_state = STATE_F;
            end
            default: next_state = STATE_A;
        endcase
    end

endmodule


module top_module(
    input clk,
    input [7:0] d,
    input reset,
    output reg [7:0] q
);

    always @(negedge clk) begin
        if (reset)
            q <= 8'h34;
        else
            q <= d;
    end

endmodule

module top_module(
    input clk,
    input [7:0] d,
    input reset,
    output reg [7:0] q);

    always @(negedge clk) begin
        if (reset)
            q <= 8'h34;
        else
            q <= d;
    end

endmodule

module top_module(
    input clk,
    input [7:0] d,
    input reset,
    output reg [7:0] q
);

always @(negedge clk) begin
    if (reset) begin
        q <= 8'h34;
    end else begin
        q <= d;
    end
end

endmodule

module top_module(
	input clk,
	input [7:0] d,
	input reset,
	output reg [7:0] q);

	always @(negedge clk) begin
		if (reset) begin
			q <= 8'h34;
		end else begin
			q <= d;
		end
	end

endmodule


module top_module (
    input [7:0] in,
    output parity
);
    assign parity = ^in;
endmodule

module top_module (
    input [7:0] in,
    output parity
);
    assign parity = ^in; // XOR all bits of `in` to calculate even parity
endmodule

module top_module (
    input [7:0] in,
    output parity
);
    assign parity = in[0] ^ in[1] ^ in[2] ^ in[3] ^ in[4] ^ in[5] ^ in[6] ^ in[7];
endmodule

module top_module (
    input [7:0] in,
    output parity
);
    assign parity = ^in;  // XOR all bits in 'in' to calculate even parity
endmodule


module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);

    always @(*) begin
        case (state)
            2'b00: begin // State A
                next_state = (in == 1'b0) ? 2'b00 : 2'b01;
            end
            2'b01: begin // State B
                next_state = (in == 1'b0) ? 2'b10 : 2'b01;
            end
            2'b10: begin // State C
                next_state = (in == 1'b0) ? 2'b00 : 2'b11;
            end
            2'b11: begin // State D
                next_state = (in == 1'b0) ? 2'b10 : 2'b01;
            end
            default: begin
                next_state = 2'b00;
            end
        endcase
    end

    assign out = (state == 2'b11) ? 1'b1 : 1'b0;

endmodule

module top_module (
	input in,
	input [1:0] state,
	output reg [1:0] next_state,
	output out
);

    always @(*) begin
        case (state)
            2'b00: begin // State A
                next_state = (in == 1'b0) ? 2'b00 : 2'b01; // A or B
            end
            2'b01: begin // State B
                next_state = (in == 1'b0) ? 2'b10 : 2'b01; // C or B
            end
            2'b10: begin // State C
                next_state = (in == 1'b0) ? 2'b00 : 2'b11; // A or D
            end
            2'b11: begin // State D
                next_state = (in == 1'b0) ? 2'b10 : 2'b01; // C or B
            end
            default: next_state = 2'b00; // Default case to handle unexpected states
        endcase
    end

    assign out = (state == 2'b11) ? 1'b1 : 1'b0; // Output is 1 only in state D

endmodule

module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);

    // State encoding
    parameter A = 2'b00;
    parameter B = 2'b01;
    parameter C = 2'b10;
    parameter D = 2'b11;

    // Output logic for Moore state machine
    assign out = (state == D) ? 1 : 0;

    // Next state logic
    always @(*) begin
        case (state)
            A: next_state = (in == 1'b0) ? A : B;
            B: next_state = (in == 1'b0) ? C : B;
            C: next_state = (in == 1'b0) ? A : D;
            D: next_state = (in == 1'b0) ? C : B;
            default: next_state = A; // Default state
        endcase
    end

endmodule

module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);
    // Output logic for Moore machine
    assign out = (state == 2'b11) ? 1'b1 : 1'b0;

    // Next state logic
    always @(*) begin
        case (state)
            2'b00: next_state = (in == 1'b0) ? 2'b00 : 2'b01; // A
            2'b01: next_state = (in == 1'b0) ? 2'b10 : 2'b01; // B
            2'b10: next_state = (in == 1'b0) ? 2'b00 : 2'b11; // C
            2'b11: next_state = (in == 1'b0) ? 2'b10 : 2'b01; // D
            default: next_state = 2'b00;
        endcase
    end

endmodule

module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);

    // Output logic
    assign out = (state == 2'b11) ? 1 : 0;

    // State transition logic
    always @(*) begin
        case (state)
            2'b00: next_state = (in == 0) ? 2'b00 : 2'b01; // State A
            2'b01: next_state = (in == 0) ? 2'b10 : 2'b01; // State B
            2'b10: next_state = (in == 0) ? 2'b00 : 2'b11; // State C
            2'b11: next_state = (in == 0) ? 2'b10 : 2'b01; // State D
            default: next_state = 2'b00; // Default to State A
        endcase
    end

endmodule

module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);
    // Combinational logic for next state
    always @(*) begin
        case (state)
            2'b00: next_state = (in == 1'b0) ? 2'b00 : 2'b01; // State A
            2'b01: next_state = (in == 1'b0) ? 2'b10 : 2'b01; // State B
            2'b10: next_state = (in == 1'b0) ? 2'b00 : 2'b11; // State C
            2'b11: next_state = (in == 1'b0) ? 2'b10 : 2'b01; // State D
            default: next_state = 2'b00;
        endcase
    end

    // Combinational logic for output
    assign out = (state == 2'b11) ? 1 : 0; // Output logic

endmodule

module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);

    // Output logic
    assign out = (state == 2'b11) ? 1 : 0;

    // Next state logic
    always @(*) begin
        case (state)
            2'b00: next_state = (in == 0) ? 2'b00 : 2'b01; // State A
            2'b01: next_state = (in == 0) ? 2'b10 : 2'b01; // State B
            2'b10: next_state = (in == 0) ? 2'b00 : 2'b11; // State C
            2'b11: next_state = (in == 0) ? 2'b10 : 2'b01; // State D
            default: next_state = 2'b00; // Default state A
        endcase
    end

endmodule

module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);
    always @(*) begin
        case (state)
            2'b00: begin // State A
                next_state = (in == 1'b0) ? 2'b00 : 2'b01;
            end
            2'b01: begin // State B
                next_state = (in == 1'b0) ? 2'b10 : 2'b01;
            end
            2'b10: begin // State C
                next_state = (in == 1'b0) ? 2'b00 : 2'b11;
            end
            2'b11: begin // State D
                next_state = (in == 1'b0) ? 2'b10 : 2'b01;
            end
        endcase
    end

    assign out = (state == 2'b11) ? 1'b1 : 1'b0;

endmodule

module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);

    always @(*) begin
        case (state)
            2'b00: begin // State A
                next_state = (in) ? 2'b01 : 2'b00; // A -> B on in=1, A -> A on in=0
                // Output logic for State A
            end
            2'b01: begin // State B
                next_state = (in) ? 2'b01 : 2'b10; // B -> B on in=1, B -> C on in=0
                // Output logic for State B
            end
            2'b10: begin // State C
                next_state = (in) ? 2'b11 : 2'b00; // C -> D on in=1, C -> A on in=0
                // Output logic for State C
            end
            2'b11: begin // State D
                next_state = (in) ? 2'b01 : 2'b10; // D -> B on in=1, D -> C on in=0
                // Output logic for State D
            end
            default: begin
                next_state = 2'b00; // Default to state A for safety
            end
        endcase
    end

    // Output logic for the Moore state machine
    assign out = (state == 2'b11) ? 1'b1 : 1'b0; // Output is 1 only in state D

endmodule

module top_module (
	input in,
	input [1:0] state,
	output reg [1:0] next_state,
	output out
);

    // Output logic
    assign out = (state == 2'b11) ? 1 : 0;

    // State transition logic
    always @(*) begin
        case (state)
            2'b00: next_state = (in == 1'b0) ? 2'b00 : 2'b01; // State A
            2'b01: next_state = (in == 1'b0) ? 2'b10 : 2'b01; // State B
            2'b10: next_state = (in == 1'b0) ? 2'b00 : 2'b11; // State C
            2'b11: next_state = (in == 1'b0) ? 2'b10 : 2'b01; // State D
            default: next_state = 2'b00; // Default case
        endcase
    end

endmodule

module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);
    // Output logic
    assign out = (state == 2'b11) ? 1 : 0;

    // State transition logic
    always @(*) begin
        case (state)
            2'b00: next_state = (in == 1'b0) ? 2'b00 : 2'b01; // A: in=0 -> A, in=1 -> B
            2'b01: next_state = (in == 1'b0) ? 2'b10 : 2'b01; // B: in=0 -> C, in=1 -> B
            2'b10: next_state = (in == 1'b0) ? 2'b00 : 2'b11; // C: in=0 -> A, in=1 -> D
            2'b11: next_state = (in == 1'b0) ? 2'b10 : 2'b01; // D: in=0 -> C, in=1 -> B
            default: next_state = 2'b00; // Default case handling
        endcase
    end
endmodule

module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);

    // Output logic
    assign out = (state == 2'b11) ? 1'b1 : 1'b0;

    // State transition logic
    always @(*) begin
        case (state)
            2'b00: next_state = (in == 1'b0) ? 2'b00 : 2'b01; // A
            2'b01: next_state = (in == 1'b0) ? 2'b10 : 2'b01; // B
            2'b10: next_state = (in == 1'b0) ? 2'b00 : 2'b11; // C
            2'b11: next_state = (in == 1'b0) ? 2'b10 : 2'b01; // D
            default: next_state = 2'b00;
        endcase
    end

endmodule

module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);

    // Output logic based on state
    assign out = (state == 2'b11) ? 1'b1 : 1'b0;

    // Next state logic based on current state and input
    always @(*) begin
        case (state)
            2'b00: next_state = (in == 1'b0) ? 2'b00 : 2'b01; // State A
            2'b01: next_state = (in == 1'b0) ? 2'b10 : 2'b01; // State B
            2'b10: next_state = (in == 1'b0) ? 2'b00 : 2'b11; // State C
            2'b11: next_state = (in == 1'b0) ? 2'b10 : 2'b01; // State D
            default: next_state = 2'b00;
        endcase
    end

endmodule

module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);

    // Output logic
    assign out = (state == 2'b11) ? 1 : 0;

    // State transition logic
    always @(*) begin
        case(state)
            2'b00: next_state = (in == 0) ? 2'b00 : 2'b01; // State A
            2'b01: next_state = (in == 0) ? 2'b10 : 2'b01; // State B
            2'b10: next_state = (in == 0) ? 2'b00 : 2'b11; // State C
            2'b11: next_state = (in == 0) ? 2'b10 : 2'b01; // State D
            default: next_state = 2'b00; // Default case
        endcase
    end

endmodule

module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);
    always @(*) begin
        case (state)
            2'b00: // State A
                if (in)
                    next_state = 2'b01; // Move to B
                else
                    next_state = 2'b00; // Stay at A

            2'b01: // State B
                if (in)
                    next_state = 2'b01; // Stay at B
                else
                    next_state = 2'b10; // Move to C

            2'b10: // State C
                if (in)
                    next_state = 2'b11; // Move to D
                else
                    next_state = 2'b00; // Move to A

            2'b11: // State D
                if (in)
                    next_state = 2'b01; // Move to B
                else
                    next_state = 2'b10; // Move to C

            default:
                next_state = 2'b00; // Default to State A
        endcase
    end

    assign out = (state == 2'b11) ? 1'b1 : 1'b0; // Output logic
endmodule

module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);

    // Output logic
    assign out = (state == 2'b11) ? 1 : 0;

    // State transition logic
    always @(*) begin
        case (state)
            2'b00: next_state = (in == 0) ? 2'b00 : 2'b01; // State A
            2'b01: next_state = (in == 0) ? 2'b10 : 2'b01; // State B
            2'b10: next_state = (in == 0) ? 2'b00 : 2'b11; // State C
            2'b11: next_state = (in == 0) ? 2'b10 : 2'b01; // State D
            default: next_state = 2'b00;
        endcase
    end

endmodule

module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);

    assign out = (state == 2'b11) ? 1'b1 : 1'b0; // Output logic

    always @(*) begin
        case(state)
            2'b00: next_state = (in == 1'b0) ? 2'b00 : 2'b01; // A
            2'b01: next_state = (in == 1'b0) ? 2'b10 : 2'b01; // B
            2'b10: next_state = (in == 1'b0) ? 2'b00 : 2'b11; // C
            2'b11: next_state = (in == 1'b0) ? 2'b10 : 2'b01; // D
            default: next_state = 2'b00;
        endcase
    end

endmodule

module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);

    // State encoding
    localparam A = 2'b00;
    localparam B = 2'b01;
    localparam C = 2'b10;
    localparam D = 2'b11;

    // Output logic
    assign out = (state == D) ? 1'b1 : 1'b0;

    // Next state logic
    always @(*) begin
        case (state)
            A: next_state = (in == 1'b0) ? A : B;
            B: next_state = (in == 1'b0) ? C : B;
            C: next_state = (in == 1'b0) ? A : D;
            D: next_state = (in == 1'b0) ? C : B;
            default: next_state = A; // Default case (safety)
        endcase
    end

endmodule

module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);
    // Output logic based on current state
    assign out = (state == 2'b11) ? 1 : 0;

    // State transition logic
    always @(*) begin
        case (state)
            2'b00: next_state = (in == 1'b0) ? 2'b00 : 2'b01; // State A
            2'b01: next_state = (in == 1'b0) ? 2'b10 : 2'b01; // State B
            2'b10: next_state = (in == 1'b0) ? 2'b00 : 2'b11; // State C
            2'b11: next_state = (in == 1'b0) ? 2'b10 : 2'b01; // State D
            default: next_state = 2'b00; // Default case for safety
        endcase
    end
endmodule

module top_module (
    input in,
    input [1:0] state,
    output reg [1:0] next_state,
    output out
);

    // Combinational logic for next state
    always @(*) begin
        case (state)
            2'b00: next_state = in ? 2'b01 : 2'b00; // State A
            2'b01: next_state = in ? 2'b01 : 2'b10; // State B
            2'b10: next_state = in ? 2'b11 : 2'b00; // State C
            2'b11: next_state = in ? 2'b01 : 2'b10; // State D
            default: next_state = 2'b00;
        endcase
    end

    // Combinational logic for output
    assign out = (state == 2'b11) ? 1'b1 : 1'b0; // Output logic

endmodule


module top_module(
    input x,
    input y,
    output z);

    assign z = (x & y) | (~x & ~y & ~z);

endmodule

module top_module(
    input x,
    input y,
    output reg z
);

    always @(*) begin
        if (x == 0 && y == 0)
            z = 1;
        else if (x == 1 && y == 0)
            z = 0;
        else if (x == 0 && y == 1)
            z = 0;
        else if (x == 1 && y == 1)
            z = 1;
        else
            z = 1; // Default case, though it may not be needed as all cases are covered
    end

endmodule

module top_module(
    input x,
    input y,
    output reg z);

    always @(*) begin
        if (~x & ~y)
            z = 1;
        else if (x & y)
            z = 1;
        else
            z = 0;
    end

endmodule

module top_module(
    input x,
    input y,
    output z
);
    assign z = (x & y) | (!x & !y);
endmodule

module top_module(
    input x,
    input y,
    output reg z);

    always @(*) begin
        if (x == 0 && y == 0)
            z = 1;
        else if (x == 1 && y == 0)
            z = 0;
        else if (x == 0 && y == 1)
            z = 0;
        else if (x == 1 && y == 1)
            z = 1;
        else
            z = 0; // Default case
    end

endmodule

module top_module(
    input x,
    input y,
    output z);

    assign z = (x & y) | (~x & ~y);

endmodule

module top_module(
    input x,
    input y,
    output reg z);

    always @(*) begin
        case ({x, y})
            2'b00: z = 1;
            2'b01: z = 0;
            2'b10: z = 0;
            2'b11: z = 1;
            default: z = 0;
        endcase
    end

endmodule

module top_module(
    input x,
    input y,
    output reg z
);

    always @* begin
        if (x == 0 && y == 0)
            z = 1;
        else if (x == 1 && y == 0)
            z = 0;
        else if (x == 0 && y == 1)
            z = 0;
        else if (x == 1 && y == 1)
            z = 1;
    end

endmodule

module top_module(
    input x,
    input y,
    output reg z);

    always @(*) begin
        if (x == 0 && y == 0)
            z = 1;
        else if (x == 1 && y == 0)
            z = 0;
        else if (x == 0 && y == 1)
            z = 0;
        else if (x == 1 && y == 1)
            z = 1;
    end

endmodule

module top_module(
    input x,
    input y,
    output reg z
);
    always @(*) begin
        if (x == 0 && y == 0) begin
            z = 1;
        end else if (x == 1 && y == 0) begin
            z = 0;
        end else if (x == 0 && y == 1) begin
            z = 0;
        end else if (x == 1 && y == 1) begin
            z = 1;
        end
    end
endmodule

module top_module(
    input x,
    input y,
    output z);

    assign z = (~x & ~y) | (x & y);

endmodule

module top_module(
    input x,
    input y,
    output reg z
);

    always @(*) begin
        if (x == 0 && y == 0)
            z = 1;
        else if (x == 1 && y == 0)
            z = 0;
        else if (x == 0 && y == 1)
            z = 0;
        else if (x == 1 && y == 1)
            z = 1;
        else
            z = 1; // Default case for completeness
    end

endmodule