z2a2o 02a2oz 12a2 22a2o 32a2oz
otb2oz ptb2 qtb2o rtb2oz stb2
dkc2 ekc2o fkc2oz gkc2 hkc2o
2ad2o 3ad2oz 4ad2 5ad2o 6ad2oz
r1d2oz s1d2 t1d2o u1d2oz v1d2