66. Demultiplexer

How do you plan to solve it?

/*Write your code here*/
module demux1to4 (
    input d, 
    input [1:0]s,
    output reg [3:0]y

);
always @(*) begin
    y = 4'b0000;
    casez (s)
    0: y[0] = d;
    1: y[1] = d;
    2: y[2] = d;
    default: y[3] = d;
    
    endcase
end
endmodule