initial state: ##..#.#.#..##..#..##..##..#.#....#.....##.#########...#.#..#..#....#.###.###....#..........###.#.#..

..##. => .
..... => .
##..# => .
...#. => .
#.... => .
...## => #
.#.#. => .
#..#. => #
##.#. => .
#..## => .
..#.. => .
#.#.# => .
###.# => .
###.. => .
.#... => #
.##.# => .
##... => #
..### => .
####. => .
#...# => #
.#..# => #
##### => #
..#.# => #
.#.## => #
#.### => .
....# => .
.###. => .
.#### => #
.##.. => .
##.## => #
#.##. => #
#.#.. => #