// SPDX-License-Identifier: MIT
`timescale 1ns/1ps
module tb;
  logic [3:0] n, narrow; logic [4:0] wide;
  initial begin
    n=4'hf; narrow=n+4'd2; wide={1'b0,n}+5'd2; #1; $display("OBS narrow=%0d wide=%0d",narrow,wide);
    $finish;
  end
endmodule