I assume it was. Hey, maybe they did it just for ME!

Now, just to be compulsive (who, me?), I considered that my results could in theory be random luck.

In theory, it could be that they use **all** letter and digits in their codes and it was just random chance that my particular collection of caps had no 0s, 1s, 2s, 5s, 8s, Ds, or Us.

However, I've won 64 tunes so far (my method is patent pending) and I've computed the odds of my caps having only those letters and digits if Pepsi used them all:Odds: (29/36)^(64*10)

Reason: There are 29 letter and digits in my caps.

There are 36 possible letters and digits.

I have 64 winning caps.

There are 10 letters and digits per cap.

That means there is only one chance in 80×10^60 (eighty times ten to the sixtieth power) that my results were simply luck. That's one in 80 decillion in the British usage and one in 80 novemdecillion in the American usage, a number so big that you probably never heard of it!

And, of course, the particular letter and digits that don't occur in my caps are ones that can be confused typographically.

Suffice it to say that I'm convinced that they purposely limited their choice of letters and digits.