d4o1 e4o1p f4o1pb g4o1 h4o1p

2up1p 3up1pb 4up1 5up1p 6up1pb

rlq1pb slq1 tlq1p ulq1pb vlq1

gcr1 hcr1p icr1pb jcr1 kcr1p

52r1p 62r1pb 72r1 82r1p 92r1pb