What if there's a single character I don't want included at all? Say I don't like Bob from Canon X and DNW him, but I'm requesting F/M, F/M/M, and F/F/M ships in Canon X--so this effectively excludes Alice/Bob, Alice/Bob/Carl, Alice/Bob/Dan, Alice/Bob/Eve, etc, as well as Alice/Carl (etc) works where Bob makes an appearance. Is it okay to DNW a character like this?