v1u2
u1u2bv
t1u2b
s1u2
r1u2bv
6au2bv
5au2b
4au2
3au2bv
2au2b
hkt2b
gkt2
fkt2bv
ekt2b
dkt2
sts2
rts2bv
qts2b
pts2
ots2bv
32r2bv
22r2b
12r2
02r2bv
z2r2b