Someone did some digging over at sevensins "I Flamez I" he bought 60 cans,so he shared tons of useful info,hopefully someone figures it out
Originally posted by another user
I have asked a few friends too and facebook friends.. lol (i'll update as they get in touch, if need be) the letters not seen so far at all are 'A,B,D,E,G,I,O,Q,S,U,Y,Z and the number 1' (if anyone finds these letters let us know) so between the few of us, we managed to see a most used pattern! which consists of 'M,N,L,J,W,F,T,H 3,2,8,7' remember these codes are 12 digits long.. some letters are seen 2-3 times in one code (these are based off my 25 cans only! and are F's, H's, W's, 2's, 6's and 3's)
please remember this is based off about 60 cans (my 25 and friends cans) out of the millions that are out there!