yx22
xx221o
wx221
vx22
ux221o
96121o
86121
7612
66121o
56121
kg121
jg12
ig121o
hg121
gg12
vp02
up021o
tp021
sp02
rp021o
6yz21o
5yz21
4yz2
3yz21o
2yz21