module multiplier2 #(parameter BITWIDTH = 2) (A, B, P);

    // Input and Output Declarations
    input [BITWIDTH-1:0] A;       // A is an input of size BITWIDTH
    input [BITWIDTH-1:0] B;       // B is an input of size BITWIDTH
    output [2*BITWIDTH-1:0] P;     // P is an output of size 2*BITWIDTH

    // Multiply A and B
    assign P = A * B;              // Calculate the product

endmodule