11. Vector Concatenation

How do you plan to solve it?

module concat8_packer(
    input [3:0]A, 
    input [1:0]B, 
    input C, D,
    output [7:0]OUT
);
not (Cnot, C);
assign OUT[7:4] = A;
assign OUT[3:2] = B;
assign OUT[1] = Cnot;
assign OUT[0] = D;
endmodule