ys4o
xs4off
ws4of
vs4o
us4off
913off
813of
713o
613off
513of
kb3of
jb3o
ib3off
hb3of
gb3o
vk2o
uk2off
tk2of
sk2o
rk2off
6t1off
5t1of
4t1o
3t1off
2t1of