11. Vector Concatenation

How do you plan to solve it?

module concat8_packer(
    input [3:0] A,
    input [1:0] B,
    input C,
    input D,
    output [7:0] OUT
);
    assign OUT[0]  = D;
    assign OUT [1] = ~C;
    assign OUT [3:2] = B;
    assign OUT [7:4] = A;
endmodule