I've tried to figure this out before.
And really, I couldn't.
It seems however, the majority of the characters I make end up right behind my first character (like, if you click the arrow once to the left after the first character you see the new character).
I really have no idea, though. It would be nice if we could sort our characters using the character control panel on this site, but without the source code I don't think that will be happening.