9 3
a
aaabbbccc
aaabbbccc
aaabbbccc
dddeeefff
dddeeefff
dddeeefff
ggghhhiii
ggghhhiii
ggghhhiii
r
abcdefghi
acbedgfih
caebgdifh
ceagbidhf
ecgaibhdf
egciahbfd
geichafbd
giehcfadb
ighefcdab
c
abcdefghi
badcfehgi
bdafcheig
dbfahcieg
dfbhaicge
fdhbiagce
fhdibgaec
hfidgbeac
hifgdebca
r
abcdefghi
abcdefghi
abcdefghi
abcdefghi
abcdefghi
abcdefghi
abcdefghi
abcdefghi
abcdefghi
c
aaaaaaaaa
bbbbbbbbb
ccccccccc
ddddddddd
eeeeeeeee
fffffffff
ggggggggg
hhhhhhhhh
iiiiiiiii