PS8/9 are overdue with 64PS 1,2/.../...
(1) 1st column of 64PS hit M2,1 four(4) times back to back. L1,1 and H2,2 hit. M1,2 is OVERDUE
(2) Isolating M1,2 in the 1st column of 64PS discloses PS8/9 dominate.
(3) Isolating 64PS1,2 of the 1st column leaves 36 numbers out of 220.