Here's the entire list of possible letter combinations, arranged in alphabetical order (50 entries- AP has 51 phrases but there was a pair with the same letters):
This is the list without any set that contains a different one. Having a deck for each of these sets can guarantee that you have a legal deck for any potato phrase (17 entries):
If you really want to ignore the
speedbuilding part of the tournament and build all your decks ahead of time, "ist" can substitute for 8 of those, and "afl" can replace three of the others.
Building from a pool of cards that's unnecessarily smaller than your opponents' probably isn't a good idea anyway.