module test (
    input wire [15:0] pattern//,
    //output reg [2:0] match
);

    always @ (*) begin
        casez (pattern)
            16'h000? :  $display("Matched on 000? for %h", pattern);
            16'h00?? :  $display("Matched on 00?? for %h", pattern);
            16'h0??? :  $display("Matched on 0??? for %h", pattern);
            16'h???? :  $display("Matched on ???? for %h", pattern);
            default :   $display("Did not match patterns");
        endcase
    end



endmodule : test