11. Vector Concatenation

How do you plan to solve it?

module concat8_packer(A,B,C,D,OUT);
input wire [3:0] A; 
input wire [1:0] B; 
input wire C,D; 
output wire [7:0] OUT; 

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