A Block

P2 7 SS -1 beat P3 3 SS +2	20 hr
P1 7 SS 3 beat P4 5 SS -2	20 hr
P4 7 SS 0 beat P3 6 SS 3	20 hr
P1 7 SS +2 beat P2 6 SS -3	20 hr
P2 7 SS 0 beat P4 5 SS -1	21 hr
P1 7 SS +1 beat P3 5 SS -1	21 hr