yzx0
zzx0w
0zx0wf
1zx0
2zx0w
nqy0w
oqy0wf
pqy0
qqy0w
rqy0wf
chz0wf
dhz0
ehz0w
fhz0wf
ghz0
17z0
27z0w
37z0wf
47z0
57z0w
qy00w
ry00wf
sy00
ty00w
uy00wf