9 9 1
aaabbbccc
ajabkbclc
aaabbbccc
dddeeefff
dmdenefof
dddeeefff
ggghhhiii
gpghqhiri
ggghhhiii
.6.4..7.2
3.2..1.9.
.5..6...3
9..3...2.
..4...3..
.2...9..1
4...5..3.
.8.1..6.4
6.7..2.5.