10
2....
41...
.63..
.5...
.....

12...
.4...
.63..
..5..
.....

54...
.316.
...2.
.....
.....

.6...
.3...
521..
4....
.....

..61.
534..
.2...
.....
.....

.6...
34...
.2...
.51..
.....

1....
64...
.32..
.5...
.....

..32.
465..
1....
.....
.....

256..
..314
.....
.....
.....

..3..
2165.
..4..
.....
.....