v2v4
u2v468
t2v46
s2v4
r2v468
6bv468
5bv46
4bv4
3bv468
2bv46
hlu46
glu4
flu468
elu46
dlu4
sut4
rut468
qut46
put4
out468
33s468
23s46
13s4
03s468
z3s46