11. Vector Concatenation

How do you plan to solve it?

/*Write your code here*/
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[1:0] = {~C, D};

endmodule