Talk:Forma/@comment-184.0.76.155-20160326043518/@comment-98.247.144.222-20160326064111

Those are rotations for missions types like interception, defense and survival.

Defense/Survival:

5 waves/minutes = A

10 waves/minutes = A

15 waves/minutes = B

20 waves/minutes = C

then it repeats itself.

Then for Interception:

1 round = A

2 rounds = A

3 rounds = B

4 rounds = C

then it repeats itself.