oxpb1y pxpb qxpb1 rxpb1y sxpb

doqb eoqb1 foqb1y goqb hoqb1

2erb1 3erb1y 4erb 5erb1 6erb1y

r5rb1y s5rb t5rb1 u5rb1y v5rb

gwsb hwsb1 iwsb1y jwsb kwsb1