zvvbs
yvvb
xvvbs4
wvvbs
vvvb
a5ub
94ubs4
84ubs
74ub
64ubs4
leubs4
keubs
jeub
ieubs4
heubs
wntbs
vntb
untbs4
tntbs
sntb
7wsb
6wsbs4
5wsbs
4wsb
3wsbs4