A 0 does not meet that constraint. A 0 is an A, but it's not in the set of all things in the universe that are neither a 0 or a blue, because it is a 0. So we're not going to throw a 0 in there. And then a 13 is an A, and it's in the set of all things in the universe that are neither a 0 or a blue. So we could throw a 13 in there. So we've simplified things a good bit. This whole crazy business, all of this crazy business, has simplified to this set right over here.