airfranz,
Do you want a list with all the codes and explained next to them what they are? Or are you just looking for the Alpha codes without explanation?
If the latter then go to the page in the MCDU were you enter the Alpha codes. Press either the up/down or left/right button (can remember which one it was
) and this will take you to 24 pages of Alpha codes.
But this just lists all the Alpha code and doesn't give any explanation with the code.