Five-box group patterns

[maqz]

With the letters representing classes, these seem to be the popular patterns of 5-box group mix:

AAAAA
ABBBB
ABCCC
ABCCD

There are only three more combos possible, which would make these the unpopular patterns:
AABBB
ABBCC
ABCDE

I think ABBCC is not too different from ABBBB. Instead of healer/tank + 4 dps, you can get 2+2 dps, magi+warlocks for instance. Might be playable?

ABCDE? Very difficult to control. AABBB on the other hand, I've never seen a team like that.