721t
821t1
921t13
a31t
b31t1
wt2t1
xt2t13
yt2t
zt2t1
0t2t13
lk3t13
mk3t
nk3t1
ok3t13
pk3t
ab4t
bb4t1
cb4t13
db4t
eb4t1
z14t1
014t13
114t
214t1
314t13