E - Europe (Multi-5)
U - North America (English)
J - Japan (Japanese)
This is for mostly all games. There are rare cases where games don't come out as a 5-in-1 language (Thats what Multi-5 stands for right?) game in Europe and games come out separately from other languages. I don't know what they are exactly but they may be this.
I - Italian
P - Portuguese
G - German
S - Spanish
F - French