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
);
assign OUT[7:4] = A;
assign OUT[3:2] = B;
assign OUT[1]   = ~C;
assign OUT[0]   = D;

endmodule