OK - now you guys got me currious. I've always wanted to know where "Y" came from, or "C" for that matter. "F" makes some sense as does "P" (First, Premium).

I know a lot of the other letters are just random assigments, not trying to make sense of BMHQKSTLV etc. Just currious if ANYONE has a REAL REASON as to why "Y" and "C."

Billy