What makes 'cos' unique?

Note: the category and title are both clues and you may need to use some twisted logic as the answer is not straightforward

(In reply to solution? by Lee)

I think you got it.
Didn't get that "not straightforward" was a clue. 8)

But what about U and J, if you write it?
Well, try to build a word from those letters...

Posted by abc on 2003-09-22 17:31:42