zzq2d
0zq2dt
1zq2
2zq2d
3zq2dt
oqr2dt
pqr2
qqr2d
rqr2dt
sqr2
dhs2
ehs2d
fhs2dt
ghs2
hhs2d
27s2d
37s2dt
47s2
57s2d
67s2dt
ryt2dt
syt2
tyt2d
uyt2dt
vyt2