y2np
z2npb
02npbp
12np
22npb
ntopb
otopbp
ptop
qtopb
rtopbp
ckppbp
dkpp
ekppb
fkppbp
gkpp
1aqp
2aqpb
3aqpbp
4aqp
5aqpb
q1qpb
r1qpbp
s1qp
t1qpb
u1qpbp