9 9 1
aaabbbccc
aaabbbccc
aaabbbccc
dddeeefff
dddeeefff
dddeeefff
ggghhhiii
ggghhhiii
ggghhhiii
....8...1
..4.3...6
.7...1.9.
.5.......
...518...
.......7.
.6.7...5.
1...2.4..
2...4....