oa1b2l na1b2 ma1b la1b2l ka1b2
zj0b2 yj0b xj0b2l wj0b2 vj0b
atzb 9szb2l 8szb2 7szb 6szb2l
l2yb2l k2yb2 j2yb i2yb2l h2yb2
wbyb2 vbyb ubyb2l tbyb2 sbyb