module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);

    // State encoding
    reg state, next_state;
    localparam A = 1'b0;
    localparam B = 1'b1;

    // State transition logic
    always @(*) begin
        case (state)
            B: begin
                if (in)
                    next_state = B;
                else
                    next_state = A;
            end
            A: begin
                if (in)
                    next_state = A;
                else
                    next_state = B;
            end
            default: next_state = B;
        endcase
    end

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

    // Output logic
    always @(*) begin
        case (state)
            B: out = 1'b1;
            A: out = 1'b0;
            default: out = 1'b1;
        endcase
    end

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);

    // State declarations
    typedef enum reg {A, B} state_t;
    state_t current_state, next_state;

    // State transition
    always @(*) begin
        case (current_state)
            B: begin
                if (in)
                    next_state = B;
                else
                    next_state = A;
            end
            A: begin
                if (in)
                    next_state = A;
                else
                    next_state = B;
            end
            default: next_state = B; // Safe default state
        endcase
    end

    // Output logic
    always @(*) begin
        case (current_state)
            B: out = 1;
            A: out = 0;
            default: out = 1; // Safe default output
        endcase
    end

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

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);

    // State encoding
    typedef enum reg {A, B} state_t;
    state_t state, next_state;

    // State transition logic
    always @(*) begin
        case (state)
            B: begin
                if (in == 0) begin
                    next_state = A;
                end else begin
                    next_state = B;
                end
            end
            A: begin
                if (in == 0) begin
                    next_state = B;
                end else begin
                    next_state = A;
                end
            end
            default: next_state = B;
        endcase
    end

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

    // Output logic
    always @(*) begin
        case (state)
            B: out = 1;
            A: out = 0;
            default: out = 1;
        endcase
    end

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);

    // State encoding
    typedef enum reg [0:0] {STATE_A = 1'b0, STATE_B = 1'b1} state_t;
    state_t current_state, next_state;

    // Sequential logic: State transition
    always @(posedge clk) begin
        if (reset) begin
            current_state <= STATE_B;
        end else begin
            current_state <= next_state;
        end
    end

    // Combinational logic: State transitions and output logic
    always @(*) begin
        case (current_state)
            STATE_A: begin
                out = 0;
                if (in)
                    next_state = STATE_A;
                else
                    next_state = STATE_B;
            end
            STATE_B: begin
                out = 1;
                if (in)
                    next_state = STATE_B;
                else
                    next_state = STATE_A;
            end
            default: begin
                next_state = STATE_B; // Default reset state
                out = 1;
            end
        endcase
    end

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);

    // State Encoding
    typedef enum reg [1:0] {
        STATE_B = 2'b01,
        STATE_A = 2'b10
    } state_t;

    state_t current_state, next_state;

    // State Transition Logic
    always @(*) begin
        case (current_state)
            STATE_B: next_state = (in == 0) ? STATE_A : STATE_B;
            STATE_A: next_state = (in == 0) ? STATE_B : STATE_A;
            default: next_state = STATE_B;
        endcase
    end

    // State Register Logic
    always @(posedge clk) begin
        if (reset)
            current_state <= STATE_B;
        else
            current_state <= next_state;
    end

    // Output Logic
    always @(*) begin
        case (current_state)
            STATE_B: out = 1;
            STATE_A: out = 0;
            default: out = 1;
        endcase
    end

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);

    // State declaration
    typedef enum logic [1:0] {
        STATE_B = 2'b00,  // State B with output 1
        STATE_A = 2'b01   // State A with output 0
    } state_t;

    state_t current_state, next_state;

    // Set the output based on the current state
    always @(*) begin
        case (current_state)
            STATE_B: out = 1'b1;
            STATE_A: out = 1'b0;
            default: out = 1'b0; // default to avoid latches (though shouldn't be needed here)
        endcase
    end

    // State transition
    always @(*) begin
        case (current_state)
            STATE_B: next_state = (in == 1'b0) ? STATE_A : STATE_B;
            STATE_A: next_state = (in == 1'b0) ? STATE_B : STATE_A;
            default: next_state = STATE_B; // Default to reset state if needed
        endcase
    end

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

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);

    // State encoding
    typedef enum reg {
        STATE_A = 1'b0,
        STATE_B = 1'b1
    } state_t;

    state_t current_state, next_state;

    // State transition and output logic
    always @(posedge clk) begin
        if (reset) begin
            current_state <= STATE_B;
        end else begin
            current_state <= next_state;
        end
    end

    always @(*) begin
        case (current_state)
            STATE_B: begin
                out = 1'b1;
                if (in) begin
                    next_state = STATE_B;
                end else begin
                    next_state = STATE_A;
                end
            end
            STATE_A: begin
                out = 1'b0;
                if (in) begin
                    next_state = STATE_A;
                end else begin
                    next_state = STATE_B;
                end
            end
        endcase
    end

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);

    typedef enum reg [0:0] {A = 1'b0, B = 1'b1} state_t;
    state_t state, next_state;

    always @(posedge clk) begin
        if (reset) begin
            state <= B;
        end else begin
            state <= next_state;
        end
    end

    always @(*) begin
        case (state)
            B: begin
                out = 1;
                if (in == 1'b0) begin
                    next_state = A;
                end else begin
                    next_state = B;
                end
            end
            A: begin
                out = 0;
                if (in == 1'b0) begin
                    next_state = B;
                end else begin
                    next_state = A;
                end
            end
            default: begin
                next_state = B;
                out = 1;
            end
        endcase
    end

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);

    typedef enum reg [0:0] {
        STATE_A = 1'b0,
        STATE_B = 1'b1
    } state_t;

    reg state, next_state;

    always @(posedge clk) begin
        if (reset) begin
            state <= STATE_B;
        end else begin
            state <= next_state;
        end
    end

    always @(*) begin
        case (state)
            STATE_B: begin
                out = 1;
                if (in)
                    next_state = STATE_B;
                else
                    next_state = STATE_A;
            end
            STATE_A: begin
                out = 0;
                if (in)
                    next_state = STATE_A;
                else
                    next_state = STATE_B;
            end
            default: begin
                next_state = STATE_B;
            end
        endcase
    end

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);

    typedef enum logic [1:0] {
        STATE_A = 1'b0,
        STATE_B = 1'b1
    } state_t;

    state_t state, next_state;

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

    // Next state logic
    always @ (*) begin
        case (state)
            STATE_B: begin
                out = 1;
                if (in)
                    next_state = STATE_B;
                else
                    next_state = STATE_A;
            end
            STATE_A: begin
                out = 0;
                if (in)
                    next_state = STATE_A;
                else
                    next_state = STATE_B;
            end
        endcase
    end

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);

    // Define state encoding
    typedef enum reg {STATE_A, STATE_B} state_t;
    state_t state, next_state;

    // State transition and output logic
    always @(posedge clk) begin
        if (reset) begin
            state <= STATE_B;  // Reset state to B
        end else begin
            state <= next_state;  // Move to next state
        end
    end

    // Next state logic
    always @(*) begin
        case (state)
            STATE_B: begin
                out = 1'b1;  // Output for state B
                if (in)
                    next_state = STATE_B;
                else
                    next_state = STATE_A;
            end
            STATE_A: begin
                out = 1'b0;  // Output for state A
                if (in)
                    next_state = STATE_A;
                else
                    next_state = STATE_B;
            end
            default: begin
                next_state = STATE_B;
                out = 1'b1;
            end
        endcase
    end

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);
    // Define state parameters
    typedef enum logic [0:0] {
        STATE_B = 1'b0,
        STATE_A = 1'b1
    } state_t;

    state_t current_state, next_state;

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

    // Combinational logic for state transitions and output
    always @(*) begin
        case (current_state)
            STATE_B: begin
                out = 1'b1;
                if (in == 1'b0) begin
                    next_state = STATE_A;
                end else begin
                    next_state = STATE_B;
                end
            end
            STATE_A: begin
                out = 1'b0;
                if (in == 1'b0) begin
                    next_state = STATE_B;
                end else begin
                    next_state = STATE_A;
                end
            end
            default: begin
                next_state = STATE_B;
                out = 1'b1;
            end
        endcase
    end
endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);

    // State encoding
    typedef enum reg [1:0] {
        STATE_A = 2'b00,
        STATE_B = 2'b01
    } state_t;

    // State register
    reg state, next_state;

    // State transition and output logic
    always @(*) begin
        case (state)
            STATE_B: begin
                out = 1;
                if (in == 0)
                    next_state = STATE_A;
                else
                    next_state = STATE_B;
            end
            STATE_A: begin
                out = 0;
                if (in == 0)
                    next_state = STATE_B;
                else
                    next_state = STATE_A;
            end
            default: begin
                next_state = STATE_B;  // Default to reset state for safety
            end
        endcase
    end

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

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);

    typedef enum logic [1:0] {
        STATE_A = 1'b0,
        STATE_B = 1'b1
    } state_t;

    state_t current_state, next_state;

    always @(posedge clk) begin
        if (reset) begin
            current_state <= STATE_B;
        end else begin
            current_state <= next_state;
        end
    end

    always @(*) begin
        case (current_state)
            STATE_B: begin
                out = 1'b1;
                if (in == 1'b0) begin
                    next_state = STATE_A;
                end else begin
                    next_state = STATE_B;
                end
            end
            STATE_A: begin
                out = 1'b0;
                if (in == 1'b0) begin
                    next_state = STATE_B;
                end else begin
                    next_state = STATE_A;
                end
            end
            default: begin
                next_state = STATE_B; // Default state assignment
            end
        endcase
    end

endmodule

module top_module (
	input clk,
	input in,
	input reset,
	output reg out
);

    // State Declaration
    typedef enum reg {A, B} state_t;
    state_t state, next_state;

    // State Transition Logic
    always @(*) begin
        case(state)
            B: begin
                out = 1;
                if (in == 0)
                    next_state = A;
                else
                    next_state = B;
            end
            A: begin
                out = 0;
                if (in == 0)
                    next_state = B;
                else
                    next_state = A;
            end
            default: begin
                next_state = B;
                out = 1;
            end
        endcase
    end

    // State Update Logic
    always @(posedge clk) begin
        if (reset)
            state <= B;
        else
            state <= next_state;
    end

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);

    // State definitions
    typedef enum logic [1:0] {
        A = 1'b0,
        B = 1'b1
    } state_t;

    state_t state, next_state;

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

    // Next state logic
    always @(*) begin
        case (state)
            B: begin
                out = 1'b1;
                if (in)
                    next_state = B;
                else
                    next_state = A;
            end
            A: begin
                out = 1'b0;
                if (in)
                    next_state = A;
                else
                    next_state = B;
            end
        endcase
    end

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);

    typedef enum reg [0:0] {B=1'b0, A=1'b1} state_t;
    state_t state, next_state;

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

    // Next state logic
    always @(*) begin
        case (state)
            B: next_state = in ? B : A;
            A: next_state = in ? A : B;
            default: next_state = B;
        endcase
    end

    // Output logic
    always @(*) begin
        case (state)
            B: out = 1;
            A: out = 0;
            default: out = 0;
        endcase
    end

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);

    // State definitions
    typedef enum reg {STATE_A, STATE_B} state_t;
    state_t state, next_state;

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

    // Next state logic
    always @(*) begin
        case(state)
            STATE_B: begin
                out = 1;
                if (in)
                    next_state = STATE_B;
                else
                    next_state = STATE_A;
            end
            STATE_A: begin
                out = 0;
                if (in)
                    next_state = STATE_A;
                else
                    next_state = STATE_B;
            end
            default: begin
                next_state = STATE_B; // Default to reset state
            end
        endcase
    end

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);

    typedef enum reg [0:0] {A = 1'b0, B = 1'b1} state_t;
    state_t current_state, next_state;

    // State transition logic
    always @(*) begin
        case (current_state)
            B: next_state = in ? B : A;
            A: next_state = in ? A : B;
            default: next_state = B;
        endcase
    end

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

    // Output logic
    always @(*) begin
        case (current_state)
            B: out = 1'b1;
            A: out = 1'b0;
            default: out = 1'b1;
        endcase
    end

endmodule

module top_module (
    input clk,
    input in,
    input reset,
    output reg out
);
    // State encoding
    typedef enum logic [1:0] {
        STATE_B = 2'd0,
        STATE_A = 2'd1
    } state_t;

    reg state, next_state;

    // State transition logic
    always @(*) begin
        case (state)
            STATE_B: begin
                if (in)
                    next_state = STATE_B;
                else
                    next_state = STATE_A;
                out = 1;
            end

            STATE_A: begin
                if (in)
                    next_state = STATE_A;
                else
                    next_state = STATE_B;
                out = 0;
            end
        endcase
    end

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

endmodule


module top_module (
    input in1,
    input in2,
    input in3,
    output logic out
);
    logic xnor_out;

    assign xnor_out = ~(in1 ^ in2);
    assign out = xnor_out ^ in3;

endmodule

module top_module (
    input in1,
    input in2,
    input in3,
    output logic out
);

    logic xnor_out;

    assign xnor_out = ~(in1 ^ in2); // XNOR operation
    assign out = xnor_out ^ in3;    // XOR operation

endmodule

module top_module (
    input in1,
    input in2,
    input in3,
    output logic out
);
    logic xnor_out;

    assign xnor_out = ~(in1 ^ in2); // XNOR operation
    assign out = xnor_out ^ in3;    // XOR operation with in3

endmodule

module top_module (
    input in1,
    input in2,
    input in3,
    output logic out
);
    wire xnor_out;

    assign xnor_out = ~(in1 ^ in2);
    assign out = xnor_out ^ in3;

endmodule

module top_module (
    input in1,
    input in2,
    input in3,
    output logic out
);
    logic xnor_out;

    // Two-input XNOR
    assign xnor_out = ~(in1 ^ in2);

    // Two-input XOR with second input from xnor_out
    assign out = xnor_out ^ in3;

endmodule

module top_module (
    input in1,
    input in2,
    input in3,
    output logic out
);

    logic xnor_out;

    // XNOR gate
    assign xnor_out = ~(in1 ^ in2);

    // XOR gate
    assign out = xnor_out ^ in3;

endmodule


module top_module (
    input c,
    input d,
    output [3:0] mux_in
);

    assign mux_in[0] = ~c & d; // For ab = 00
    assign mux_in[1] = 0;      // For ab = 01
    assign mux_in[2] = c;      // For ab = 11
    assign mux_in[3] = 1;      // For ab = 10

endmodule

module top_module (
    input c,
    input d,
    output [3:0] mux_in
);

    assign mux_in[0] = d;
    assign mux_in[1] = 0;
    assign mux_in[2] = c | d;
    assign mux_in[3] = 1;

endmodule

module top_module (
    input c,
    input d,
    output [3:0] mux_in
);

    // mux_in[0] corresponds to ab = 00
    assign mux_in[0] = ~c & d;

    // mux_in[1] corresponds to ab = 01
    assign mux_in[1] = 0; // ndicates a direct zero connection

    // mux_in[2] corresponds to ab = 11
    assign mux_in[2] = c | (d & c);

    // mux_in[3] corresponds to ab = 10
    assign mux_in[3] = ~d | c;

endmodule

module top_module (
    input c,
    input d,
    output [3:0] mux_in
);

    // Implementing the function as per the given Karnaugh map
    // mux_in[0] corresponds to ab = 00
    assign mux_in[0] = ~c & d | c & ~d;
    // mux_in[1] corresponds to ab = 01
    assign mux_in[1] = 0;
    // mux_in[2] corresponds to ab = 11
    assign mux_in[2] = c & d;
    // mux_in[3] corresponds to ab = 10
    assign mux_in[3] = ~d;

endmodule

module top_module (
    input c,
    input d,
    output [3:0] mux_in
);

    // Implementation of mux_in[0] for ab=00
    assign mux_in[0] = d;

    // Implementation of mux_in[1] for ab=01
    assign mux_in[1] = 0;

    // Implementation of mux_in[2] for ab=11
    assign mux_in[2] = c;

    // Implementation of mux_in[3] for ab=10
    assign mux_in[3] = c | d;

endmodule

module top_module (
    input c,
    input d,
    output [3:0] mux_in
);

    assign mux_in[0] = ~c & d | c & ~d;
    assign mux_in[1] = 0;
    assign mux_in[2] = ~c & d;
    assign mux_in[3] = 1;

endmodule

module top_module (
    input c,
    input d,
    output [3:0] mux_in
);
    // Corresponding functions for each mux_in based on the K-map
    assign mux_in[0] = d;          // ab = 00
    assign mux_in[1] = ~c & d;     // ab = 01
    assign mux_in[2] = c;          // ab = 11
    assign mux_in[3] = ~d;         // ab = 10
endmodule

module top_module (
    input c,
    input d,
    output [3:0] mux_in
);

    assign mux_in[0] = (~c & d) | (c & ~d);  // cd = 00, 10, 11
    assign mux_in[1] = 1'b0;                 // cd = 01
    assign mux_in[2] = c & d;                // cd = 11
    assign mux_in[3] = ~c | d;               // cd = 00, 10, 11

endmodule

module top_module (
    input c,
    input d,
    output [3:0] mux_in
);
    assign mux_in[0] = (~c & d) | c;
    assign mux_in[1] = 0;
    assign mux_in[2] = (c & d);
    assign mux_in[3] = 1;
endmodule

module top_module (
    input c,
    input d,
    output [3:0] mux_in
);

    // Outputs corresponding to ab = 00, 01, 11, 10
    assign mux_in[0] = ~c & d;      // 00 -> 1
    assign mux_in[1] = 0;           // 01 -> 0
    assign mux_in[2] = c | d;       // 11 -> 1 (c=1 or d=1)
    assign mux_in[3] = 1;           // 10 -> 1

endmodule

module top_module (
    input c,
    input d,
    output [3:0] mux_in
);

    // Assign mux_in[0] based on K-map: when ab = 00
    assign mux_in[0] = ~c & d | c & ~d | c & d;

    // Assign mux_in[1] based on K-map: when ab = 01
    assign mux_in[1] = 0;

    // Assign mux_in[2] based on K-map: when ab = 11
    assign mux_in[2] = c & d;

    // Assign mux_in[3] based on K-map: when ab = 10
    assign mux_in[3] = ~c & d | c & ~d | c & d;

endmodule

module top_module (
    input c,
    input d,
    output [3:0] mux_in
);
    assign mux_in[0] = ~c & d;     // 00
    assign mux_in[1] = 0;         // 01
    assign mux_in[2] = c | ~d;    // 11
    assign mux_in[3] = 1;         // 10
endmodule

module top_module (
    input c,
    input d,
    output [3:0] mux_in
);

    // Define the logic for each mux_in output based on the Karnaugh map
    assign mux_in[0] = ~c & d;
    assign mux_in[1] = 1'b0;
    assign mux_in[2] = c & ~d;
    assign mux_in[3] = 1'b1;

endmodule

module top_module (
    input c,
    input d,
    output [3:0] mux_in
);
    assign mux_in[0] = ~c & d;
    assign mux_in[1] = 0;
    assign mux_in[2] = c;
    assign mux_in[3] = ~d | c;
endmodule

module top_module (
    input c,
    input d,
    output [3:0] mux_in
);

    assign mux_in[0] = ~c & d;        // For ab = 00, covers minterms (0,1)
    assign mux_in[1] = 0;             // For ab = 01, covers minterms (2,3)
    assign mux_in[2] = c | (d & ~c);  // For ab = 11, covers minterms (6,7,14)
    assign mux_in[3] = c | ~d;        // For ab = 10, covers minterms (4,13,15)

endmodule

module top_module (
	input c,
	input d,
	output [3:0] mux_in
);

	assign mux_in[0] = d;          // cd = 00 -> mux_in[0] = 1 for minterms 3, 7, 11, 10
	assign mux_in[1] = c & d;      // cd = 01 -> mux_in[1] = 0
	assign mux_in[2] = c | d;      // cd = 11 -> mux_in[2] = 1
	assign mux_in[3] = 1'b1;       // cd = 10 -> mux_in[3] = 1

endmodule

module top_module (
    input c,
    input d,
    output [3:0] mux_in
);

    // Implementing the logic for each mux_in[i] based on the K-map
    // mux_in[0] corresponds to ab = 00
    assign mux_in[0] = (~c & d) | (c & ~d) | (c & d);

    // mux_in[1] corresponds to ab = 01
    assign mux_in[1] = 0;

    // mux_in[2] corresponds to ab = 11
    assign mux_in[2] = c & d;

    // mux_in[3] corresponds to ab = 10
    assign mux_in[3] = (~c & d) | (c & d);

endmodule

module top_module (
    input c,
    input d,
    output [3:0] mux_in
);
    assign mux_in[0] = d;
    assign mux_in[1] = c & d;
    assign mux_in[2] = c;
    assign mux_in[3] = 1'b1;
endmodule

module top_module (
    input c,
    input d,
    output [3:0] mux_in
);

    // Logic for mux_in[0] corresponding to ab = 00
    assign mux_in[0] = d;

    // Logic for mux_in[1] corresponding to ab = 01
    assign mux_in[1] = 0;

    // Logic for mux_in[2] corresponding to ab = 11
    assign mux_in[2] = c | d;

    // Logic for mux_in[3] corresponding to ab = 10
    assign mux_in[3] = 1;

endmodule


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

    // State encoding using one-hot
    reg [1:0] state, next_state;
    localparam A = 2'b01, B = 2'b10;

    // State transition and output logic
    always @(*) begin
        // Default assignments
        next_state = state;
        z = 0;

        case (state)
            A: begin
                if (x == 1) begin
                    next_state = B;
                    z = 1;
                end
            end
            B: begin
                if (x == 0)
                    z = 1;
                else
                    z = 0;
            end
        endcase
    end

    // State register with asynchronous reset
    always @(posedge clk or posedge areset) begin
        if (areset)
            state <= A;
        else
            state <= next_state;
    end

endmodule

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

    // State encoding using one-hot
    reg [1:0] state, next_state;
    localparam [1:0] STATE_A = 2'b01;
    localparam [1:0] STATE_B = 2'b10;

    // State transition logic
    always @(*) begin
        case (state)
            STATE_A: begin
                if (x) begin
                    next_state = STATE_B;
                    z = 1;
                end else begin
                    next_state = STATE_A;
                    z = 0;
                end
            end
            STATE_B: begin
                if (x) begin
                    next_state = STATE_B;
                    z = 0;
                end else begin
                    next_state = STATE_B;
                    z = 1;
                end
            end
            default: begin
                next_state = STATE_A;
                z = 0;
            end
        endcase
    end

    // State flip-flops with asynchronous active-high reset
    always @(posedge clk or posedge areset) begin
        if (areset) begin
            state <= STATE_A;
        end else begin
            state <= next_state;
        end
    end

endmodule

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

    // State encoding using one-hot
    reg state, next_state;
    parameter A = 1'b0, B = 1'b1;

    always @(posedge clk or posedge areset) begin
        if (areset)
            state <= A;  // Reset to state A
        else
            state <= next_state;
    end

    always @(*) begin
        case (state)
            A: begin
                if (x) begin
                    next_state = B;
                    z = 1'b1;
                end else begin
                    next_state = A;
                    z = 1'b0;
                end
            end
            B: begin
                if (x) begin
                    next_state = B;
                    z = 1'b0;
                end else begin
                    next_state = B;
                    z = 1'b1;
                end
            end
        endcase
    end
endmodule

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

    // State declarations using one-hot encoding
    reg state_A, state_B;

    always @(posedge clk or posedge areset) begin
        if (areset) begin
            state_A <= 1'b1; // Initial state A
            state_B <= 1'b0;
        end else begin
            case ({state_A, state_B})
                2'b10: begin // State A
                    if (x) begin
                        state_A <= 1'b0;
                        state_B <= 1'b1;
                        z <= 1'b1;
                    end else begin
                        state_A <= 1'b1;
                        state_B <= 1'b0;
                        z <= 1'b0;
                    end
                end
                2'b01: begin // State B
                    if (x) begin
                        state_A <= 1'b0;
                        state_B <= 1'b1;
                        z <= 1'b0;
                    end else begin
                        state_A <= 1'b0;
                        state_B <= 1'b1;
                        z <= 1'b1;
                    end
                end
            endcase
        end
    end

endmodule

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

    // One-hot encoding for states
    typedef enum reg [1:0] {
        STATE_A = 2'b01,
        STATE_B = 2'b10
    } state_t;

    state_t state, next_state;

    // State transition logic
    always @(*) begin
        case (state)
            STATE_A: begin
                if (x == 1'b0) begin
                    next_state = STATE_A;
                    z = 1'b0;
                end else begin
                    next_state = STATE_B;
                    z = 1'b1;
                end
            end
            STATE_B: begin
                if (x == 1'b0) begin
                    next_state = STATE_B;
                    z = 1'b1;
                end else begin
                    next_state = STATE_B;
                    z = 1'b0;
                end
            end
            default: begin
                next_state = STATE_A;
                z = 1'b0;
            end
        endcase
    end

    // State register with asynchronous reset
    always @(posedge clk or posedge areset) begin
        if (areset) begin
            state <= STATE_A;
        end else begin
            state <= next_state;
        end
    end

endmodule

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

    typedef enum reg [1:0] {A = 2'b01, B = 2'b10} state_t;
    state_t state, next_state;

    always @(posedge clk or posedge areset) begin
        if (areset)
            state <= A;
        else
            state <= next_state;
    end

    always @(*) begin
        case (state)
            A: begin
                z = 0;
                if (x)
                    next_state = B;
                else
                    next_state = A;
            end
            B: begin
                if (x) begin
                    z = 0;
                    next_state = B;
                end
                else begin
                    z = 1;
                    next_state = B;
                end
            end
            default: begin
                z = 0;
                next_state = A;
            end
        endcase
    end

endmodule

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

    // State encoding using one-hot encoding
    reg [1:0] state, next_state;
    localparam A = 2'b01;
    localparam B = 2'b10;

    // State transition logic
    always @(posedge clk or posedge areset) begin
        if (areset)
            state <= A; // Reset to state A
        else
            state <= next_state;
    end

    // Next state logic and output logic
    always @(*) begin
        case (state)
            A: begin
                if (x) begin
                    next_state = B;
                    z = 1;
                end else begin
                    next_state = A;
                    z = 0;
                end
            end
            B: begin
                if (x) begin
                    next_state = B;
                    z = 0;
                end else begin
                    next_state = B;
                    z = 1;
                end
            end
            default: begin
                next_state = A; // Default state in case of invalid state
                z = 0;
            end
        endcase
    end

endmodule

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

    reg [1:0] state, next_state;

    // State encoding in one-hot fashion
    localparam A = 2'b01;
    localparam B = 2'b10;

    // State transition based on current state and input
    always @(*) begin
        case (state)
            A: begin
                if (x == 0) begin
                    next_state = A;
                    z = 0;
                end else begin
                    next_state = B;
                    z = 1;
                end
            end
            B: begin
                if (x == 0) begin
                    next_state = B;
                    z = 1;
                end else begin
                    next_state = B;
                    z = 0;
                end
            end
            default: begin
                next_state = A; // default state if needed
                z = 0;
            end
        endcase
    end

    // State register with asynchronous reset
    always @(posedge clk or posedge areset) begin
        if (areset) begin
            state <= A;
        end else begin
            state <= next_state;
        end
    end

endmodule

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

    // State Encoding
    parameter A = 1'b0, B = 1'b1;

    // State registers
    reg state, next_state;

    // State transition and output logic
    always @(posedge clk or posedge areset) begin
        if (areset) begin
            state <= A;
        end else begin
            state <= next_state;
        end
    end

    always @(*) begin
        case (state)
            A: begin
                if (x == 1'b0) begin
                    next_state = A;
                    z = 1'b0;
                end else begin
                    next_state = B;
                    z = 1'b1;
                end
            end
            B: begin
                if (x == 1'b0) begin
                    next_state = B;
                    z = 1'b1;
                end else begin
                    next_state = B;
                    z = 1'b0;
                end
            end
            default: begin
                next_state = A;
                z = 1'b0;
            end
        endcase
    end

endmodule

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

    // State encoding using one-hot encoding
    parameter A = 2'b01, B = 2'b10;
    reg [1:0] state, next_state;

    always @(posedge clk or posedge areset) begin
        if (areset)
            state <= A; // Asynchronous reset to state A
        else
            state <= next_state;
    end

    always @(*) begin
        case (state)
            A: begin
                if (x) begin
                    next_state = B;
                    z = 1;
                end else begin
                    next_state = A;
                    z = 0;
                end
            end
            B: begin
                if (x) begin
                    next_state = B;
                    z = 0;
                end else begin
                    next_state = B;
                    z = 1;
                end
            end
            default: begin
                next_state = A;
                z = 0;
            end
        endcase
    end

endmodule

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

    // State encoding using one-hot
    reg state_A, state_B;
    reg next_A, next_B;

    // State transition and output logic
    always @(*) begin
        case ({state_A, state_B})
            2'b10: begin // State A
                if (x) begin
                    next_A = 1'b0;
                    next_B = 1'b1;
                    z = 1'b1;
                end else begin
                    next_A = 1'b1;
                    next_B = 1'b0;
                    z = 1'b0;
                end
            end
            2'b01: begin // State B
                if (x) begin
                    next_A = 1'b0;
                    next_B = 1'b1;
                    z = 1'b0;
                end else begin
                    next_A = 1'b0;
                    next_B = 1'b1;
                    z = 1'b1;
                end
            end
            default: begin
                next_A = 1'b1; // Default state A
                next_B = 1'b0;
                z = 1'b0; // Default output for unknown states
            end
        endcase
    end

    // State flip-flops with asynchronous reset
    always @(posedge clk or posedge areset) begin
        if (areset) begin
            state_A <= 1'b1;
            state_B <= 1'b0;
        end else begin
            state_A <= next_A;
            state_B <= next_B;
        end
    end

endmodule

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

    // One-hot state encoding
    typedef enum reg [1:0] {A = 2'b01, B = 2'b10} state_t;
    state_t state, next_state;

    // State transition logic
    always @(*) begin
        case (state)
            A: begin
                if (x) begin
                    next_state = B;
                    z = 1;
                end else begin
                    next_state = A;
                    z = 0;
                end
            end
            B: begin
                if (x) begin
                    next_state = B;
                    z = 0;
                end else begin
                    next_state = B;
                    z = 1;
                end
            end
            default: begin
                next_state = A; // Default case to handle unforeseen cases, reset state
                z = 0;
            end
        endcase
    end

    // State register update
    always @(posedge clk or posedge areset) begin
        if (areset) begin
            state <= A;
        end else begin
            state <= next_state;
        end
    end

endmodule

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

    // State encoding using one-hot encoding
    reg [1:0] state, next_state;
    parameter A = 2'b01, B = 2'b10;

    // State transition on clock edge
    always @(posedge clk or posedge areset) begin
        if (areset) begin
            state <= A;  // Reset to state A
        end else begin
            state <= next_state;
        end
    end

    // Next state logic
    always @(*) begin
        case (state)
            A: begin
                if (x) begin
                    next_state = B;
                    z = 1;
                end else begin
                    next_state = A;
                    z = 0;
                end
            end
            B: begin
                if (x) begin
                    next_state = B;
                    z = 0;
                end else begin
                    next_state = B;
                    z = 1;
                end
            end
            // No need for a default as all states are enumerated
        endcase
    end

endmodule

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

    // State parameters for one-hot encoding
    reg [1:0] state, next_state;
    parameter A = 2'b01, B = 2'b10;

    always @(posedge clk or posedge areset) begin
        if (areset) begin
            state <= A; // Reset to state A
        end else begin
            state <= next_state;
        end
    end

    always @(*) begin
        case (state)
            A: begin
                if(x) begin
                    next_state = B;
                    z = 1;
                end else begin
                    next_state = A;
                    z = 0;
                end
            end

            B: begin
                if(x) begin
                    next_state = B;
                    z = 0;
                end else begin
                    next_state = B;
                    z = 1;
                end
            end

            default: begin
                next_state = A;
                z = 0;
            end
        endcase
    end

endmodule

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

    // State encoding
    typedef enum reg [1:0] {
        A = 2'b01,
        B = 2'b10
    } state_t;

    state_t state, next_state;

    // Combinational logic for determining the next state and output
    always @(*) begin
        case (state)
            A: begin
                if (x == 1'b0) begin
                    next_state = A;
                    z = 1'b0;
                end else begin
                    next_state = B;
                    z = 1'b1;
                end
            end
            B: begin
                if (x == 1'b0) begin
                    next_state = B;
                    z = 1'b1;
                end else begin
                    next_state = B;
                    z = 1'b0;
                end
            end
            default: begin
                next_state = A;
                z = 1'b0;
            end
        endcase
    end

    // Sequential logic for state transition
    always @(posedge clk or posedge areset) begin
        if (areset)
            state <= A; // Reset state
        else
            state <= next_state;
    end

endmodule

module top_module (
    input clk,
    input areset,
    input x,
    output reg z
);
    // One-hot encoding states
    reg [1:0] state, next_state;
    localparam A = 2'b01, B = 2'b10;

    // State transition and output logic
    always @(posedge clk or posedge areset) begin
        if (areset) begin
            state <= A;
        end else begin
            state <= next_state;
        end
    end

    always @(*) begin
        case (state)
            A: begin
                if (x) begin
                    next_state = B;
                    z = 1;
                end else begin
                    next_state = A;
                    z = 0;
                end
            end
            B: begin
                if (x) begin
                    next_state = B;
                    z = 0;
                end else begin
                    next_state = B;
                    z = 1;
                end
            end
            default: begin
                next_state = A;
                z = 0;
            end
        endcase
    end
endmodule

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

    // State declaration for one-hot encoding
    reg state, next_state;

    // State encoding
    parameter A = 1'b0, B = 1'b1;

    // State transition logic (combinational)
    always @(*) begin
        // Default next_state assignment
        next_state = state;

        case (state)
            A: begin
                if (x)
                    next_state = B;
                z = x; // z=1 when x=1 in state A, z=0 when x=0
            end
            B: begin
                if (~x)
                    z = 1;  // z=1 when x=0 in state B
                else
                    z = 0;  // z=0 when x=1 in state B
            end
        endcase
    end

    // State flip-flops with asynchronous reset
    always @(posedge clk or posedge areset) begin
        if (areset)
            state <= A;
        else
            state <= next_state;
    end

endmodule

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

    // State encoding
    reg [1:0] state, next_state;

    localparam A = 2'b01, B = 2'b10;

    // State transition logic (combinational)
    always @(*) begin
        case (state)
            A: begin
                if (x == 0) begin
                    next_state = A;
                    z = 0;
                end else begin
                    next_state = B;
                    z = 1;
                end
            end
            B: begin
                if (x == 0) begin
                    next_state = B;
                    z = 1;
                end else begin
                    next_state = B;
                    z = 0;
                end
            end
            default: begin
                next_state = A;
                z = 0;
            end
        endcase
    end

    // State flip-flops with asynchronous reset
    always @(posedge clk or posedge areset) begin
        if (areset) begin
            state <= A;
        end else begin
            state <= next_state;
        end
    end

endmodule

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

    // State encoding using one-hot encoding
    reg [1:0] state, next_state;
    localparam A = 2'b01;
    localparam B = 2'b10;

    // State transition always block
    always @(posedge clk or posedge areset) begin
        if (areset) begin
            state <= A;
        end else begin
            state <= next_state;
        end
    end

    // Next state logic
    always @(*) begin
        case (state)
            A: begin
                if (x) begin
                    next_state = B;
                    z = 1;
                end else begin
                    next_state = A;
                    z = 0;
                end
            end
            B: begin
                if (x) begin
                    next_state = B;
                    z = 0;
                end else begin
                    next_state = B;
                    z = 1;
                end
            end
            default: begin
                next_state = A;
                z = 0;
            end
        endcase
    end
endmodule

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

    // State encoding using one-hot technique
    reg [1:0] state, next_state;
    localparam A = 2'b01;
    localparam B = 2'b10;

    // State transition logic
    always @(*) begin
        case (state)
            A: if (x) begin
                next_state = B;
                z = 1;
            end else begin
                next_state = A;
                z = 0;
            end
            B: if (x) begin
                next_state = B;
                z = 0;
            end else begin
                next_state = B;
                z = 1;
            end
            default: begin
                next_state = A;
                z = 0;
            end
        endcase
    end

    // State flip-flops with asynchronous reset
    always @(posedge clk or posedge areset) begin
        if (areset)
            state <= A;
        else
            state <= next_state;
    end

endmodule


module top_module (
    input clk,
    input a,
    input b,
    output reg q,
    output reg state
);

    always @(posedge clk) begin
        state <= q; // the state output follows the current q

        // Determine the next state of q based on current inputs a and b
        if (a & b)
            q <= ~q; // toggle q when both a and b are 1
        else if (a)
            q <= 1; // set q to 1 when only a is 1
        else
            q <= 0; // set q to 0 for all other conditions
    end

endmodule

module top_module (
	input clk,
	input a,
	input b,
	output reg q,
	output reg state
);

always @(posedge clk) begin
    if (a && b)
        state <= 1;
    else
        state <= 0;

    if (a && b)
        q <= ~q;
    else
        q <= state;
end

endmodule

module top_module (
    input clk,
    input a,
    input b,
    output reg q,
    output reg state
);

    always @(posedge clk) begin
        if (a & b) begin
            q <= state;
            state <= ~state;
        end else if (a) begin
            state <= 1'b0;
            q <= state;
        end else if (b) begin
            state <= 1'b1;
            q <= state;
        end else begin
            q <= state;
        end
    end

endmodule

module top_module (
    input clk,
    input a,
    input b,
    output reg q,
    output reg state
);

    always @(posedge clk) begin
        if (a & b) begin
            state <= 1'b0;
            q <= 1'b0;
        end else if (a & ~b) begin
            state <= 1'b1;
            q <= 1'b0;
        end else if (~a & b) begin
            state <= state;
            q <= 1'b1;
        end else begin
            state <= state;
            q <= ~q;
        end
    end

endmodule

module top_module (
    input clk,
    input a,
    input b,
    output reg q,
    output reg state
);

    always @(posedge clk) begin
        state <= q;
        q <= (a & ~b) | (~a & b & ~q) | (a & b & ~state);
    end

endmodule

module top_module (
	input clk,
	input a,
	input b,
	output reg q,
	output reg state
);

    always @(posedge clk) begin
        if (a & b) begin
            state <= ~state;
        end else if (a) begin
            state <= b;
        end
        q <= state;
    end

endmodule

module top_module (
	input clk,
	input a,
	input b,
	output reg q,
	output reg state
);

    always @(posedge clk) begin
        if (a && b) begin
            q <= 0;
            state <= 0;
        end else if (a) begin
            q <= 0;
            state <= 1;
        end else if (b) begin
            q <= ~q;
            state <= ~q;
        end else begin
            q <= q;
            state <= q;
        end
    end

endmodule

module top_module (
    input clk,
    input a,
    input b,
    output reg q,
    output reg state
);

    always @(posedge clk) begin
        if (a && b) begin
            state <= ~state;
        end
        q <= state;
    end

endmodule

module top_module (
    input clk,
    input a,
    input b,
    output reg q,
    output reg state
);

    always @(posedge clk) begin
        if (a && b) begin
            state <= ~state;
            q <= state;
        end else if (a && ~b) begin
            state <= 0;
            q <= 1;
        end else if (~a && b) begin
            state <= 1;
            q <= 0;
        end else begin
            state <= 0;
            q <= 0;
        end
    end

endmodule

module top_module (
	input clk,
	input a,
	input b,
	output reg q,
	output state
);

    reg q_next; // Next state of the flip-flop

    assign state = q; // The current state is the output of the flip-flop

    always @(*) begin
        if (a == 1'b1 && b == 1'b1)
            q_next = ~q; // Toggle the state if both a and b are 1
        else if (a == 1'b1 || b == 1'b1)
            q_next = 1'b1; // Set the state to 1 if either a or b is 1
        else
            q_next = 1'b0; // Otherwise reset the state to 0
    end

    always @(posedge clk) begin
        q <= q_next; // Update the output at the positive edge of the clock
    end

endmodule

module top_module (
    input clk,
    input a,
    input b,
    output reg q,
    output state
);

    reg current_state;

    always @(posedge clk) begin
        if (a & ~b)
            current_state <= 1;
        else if (~a & b)
            current_state <= 0;
    end

    assign state = current_state;
    assign q = current_state;

endmodule

module top_module (
    input clk,
    input a,
    input b,
    output reg q,
    output reg state
);

    always @(posedge clk) begin
        // State logic
        state <= q;

        // Next state and output logic
        if (a && b)
            q <= 1'b1;
        else if (a && !b)
            q <= 1'b0;
        else
            q <= q; // Maintain previous state
    end

endmodule

module top_module (
    input clk,
    input a,
    input b,
    output reg q,
    output state
);
    reg q_next;

    always @(posedge clk) begin
        q <= q_next;
    end

    always @(*) begin
        case ({a, b})
            2'b00: q_next = q;      // Hold state
            2'b01: q_next = 1;      // Set state
            2'b10: q_next = q;      // Hold state
            2'b11: q_next = ~q;     // Toggle state
            default: q_next = q;    // Default to hold state
        endcase
    end

    assign state = q;

endmodule

module top_module (
    input clk,
    input a,
    input b,
    output reg q,
    output state
);

    reg flip_flop;

    always @(posedge clk) begin
        if (a && b)
            flip_flop <= ~flip_flop;
        else if (a && ~b)
            flip_flop <= 1;
        else if (~a && b)
            flip_flop <= 0;
	// If neither condition is met, maintain the current state (implied)
    end

    assign q = flip_flop;
    assign state = flip_flop;

endmodule

module top_module (
    input clk,
    input a,
    input b,
    output reg q,
    output state
);

    reg state_reg;

    always @(posedge clk) begin
        if (a && b)
            state_reg <= state_reg;
        else if (a && ~b)
            state_reg <= ~state_reg;
        else if (~a && b)
            state_reg <= state_reg;
        else
            state_reg <= state_reg;
    end

    assign state = state_reg;
    assign q = (state_reg) ? ~b : (state_reg | b);

endmodule

module top_module (
    input clk,
    input a,
    input b,
    output reg q,
    output state
);

    reg state_reg;

    always @(posedge clk) begin
        state_reg <= (b & ~a) | (state_reg & ~(a & b));
        q <= state_reg;
    end

    assign state = state_reg;

endmodule

module top_module (
    input clk,
    input a,
    input b,
    output reg q,
    output reg state
);

    always @(posedge clk) begin
        if (a && b)
            state <= ~state;
        else if (a)
            state <= 1'b0;
        else if (b)
            state <= 1'b1;

        q <= state;
    end

endmodule

module top_module (
    input clk,
    input a,
    input b,
    output reg q,
    output state
);

    reg flipflop;

    always @(posedge clk) begin
        flipflop <= (a && b) ? ~flipflop : a;
    end

    assign state = flipflop;
    assign q = flipflop;

endmodule

module top_module (
    input clk,
    input a,
    input b,
    output reg q,
    output reg state
);

    // Internal signal for the flip-flop
    reg q_internal;

    always @(posedge clk) begin
        // State logic
        state <= q_internal;

        // Combinational logic based on inputs 'a' and 'b'
        if (a && b)
            q_internal <= ~q_internal;
        else if (a && !b)
            q_internal <= 1;
        else if (!a && b)
            q_internal <= 0;
    end

    // Output logic
    always @(posedge clk) begin
        q <= q_internal;
    end

endmodule

module top_module (
    input clk,
    input a,
    input b,
    output reg q,
    output reg state
);

    always @(posedge clk) begin
        if (a && b) begin
            q <= state;
            state <= ~state;
        end else if (a) begin
            q <= 1'b0;
            state <= 1'b1;
        end else if (b) begin
            q <= 1'b1;
            state <= 1'b0;
        end else begin
            q <= state;
            state <= state;
        end
    end

endmodule


module top_module (
    input [4:1] x,
    output logic f
);
    always_comb begin
        case (x)
            4'b0000, 4'b0011, 4'b1111, 4'b1011, 4'b1000, 4'b1100, 4'b1101: f = 1;
            default: f = 0;
        endcase
    end
endmodule

module top_module (
	input [4:1] x,
	output logic f
);
    always_comb begin
        case (x)
            4'b0000, 4'b0011, 4'b1100, 4'b1101, 4'b1110, 4'b1011, 4'b1000, 4'b1010: f = 1;
            default: f = 0;
        endcase
    end
endmodule

module top_module (
    input [4:1] x,
    output logic f
);

    always_comb begin
        case (x)
            4'b0000, 4'b0011,
            4'b1100, 4'b1101, 4'b1110,
            4'b1000, 4'b1001, 4'b1011: f = 1;
            default: f = 0;
        endcase
    end

endmodule

module top_module (
    input [4:1] x,
    output logic f
);
    always_comb begin
        case (x)
            4'b0000, 4'b0011, 4'b1111, 4'b1100, 4'b1101, 4'b1110, 4'b1000, 4'b1001, 4'b1011: f = 1;
            default: f = 0;
        endcase
    end
endmodule

module top_module (
    input [4:1] x,
    output logic f
);
    always_comb begin
        case (x)
            4'b0000, 4'b0011, 4'b1110, 4'b1010, 4'b1000, 4'b1100, 4'b1111, 4'b1011: f = 1;
            default: f = 0;
        endcase
    end
endmodule