=== step 0 ===
..21..1.21.2
21...2.....2
2.2222.21.21
12....22.1.2
.2.2.2......
212.212.2212
21.2..1222..
2.22..11...2
2..122...1.2
2..221.2.121
12....11.11.
2212.2......
=== step 1 ===
.12.......2.
2....2.....2
..2222.212.1
1......2.1.2
...2.......2
..........1.
...........2
2........2..
2......2.1.2
2.22...2...1
.......1.1.1
2.1...1.....
=== step 2 ===
.1..........
.....22.21.2
.2.222.2.2.1
..2...22.1.2
...........2
..........11
..........2.
........2...
2...........
.2....22...1
..22..111.1.
............
=== step 3 ===
............
..2..22221..
..222....2.1
..222222...2
...........2
..........11
.........222
............
.......2....
.22...2.1...
..2...1.1...
.......1....
=== step 4 ===
......222...
..2.2222212.
.2.......2..
..2..22....2
...2222....2
.........2..
.........2.2
..........2.
.......2....
.22...2.1...
.22...1.1...
.......1....
=== step 5 ===
............
.....2....2.
.2222....2..
..22..2...2.
...22.2...2.
....22......
.........2..
..........2.
.......2....
.22...2.1...
.22...1.1...
.......1....
=== step 6 ===
............
..222.......
.2..22...22.
.2.......22.
..2...2.....
...222......
............
............
.......2....
.22...2.1...
.22...1.1...
.......1....
=== step 7 ===
...2........
..2222......
.2..22...22.
.22..2...22.
..2222......
...222......
....2.......
............
.......2....
.22...2.1...
.22...1.1...
.......1....
=== step 8 ===
..22........
..2..2......
.2....2..22.
.2....2..22.
.2....2.....
..2.........
...222......
............
.......2....
.22...2.1...
.22...1.1...
.......1....
=== step 9 ===
..22........
.222........
.22..22..22.
222..222.22.
.22.........
..2222......
...22.......
....2.......
.......2....
.22...2.1...
.22...1.1...
.......1....
=== step 10 ===
.2.2........
....2.......
....22.2222.
2..2.2.2222.
2...........
.2...2......
..2.........
...22.......
.......2....
.22...2.1...
.22...1.1...
.......1....