.  ...       
         #    . .# ..# .     
         ..## #.#.#.  #.     
       ##. ..#  #.... ..     
 ..    ..####.##. ..... ...  
 #..####.# ###.  .#..# ..#   
    ..#..#...##.#.# . #..##. 
    #....#.Z##.#._ ....  . . 
.#   #...{.#...Z##......  . .
.... ###.#######.##  ##..#  .
.#...#..#..#  # ..#..##..##. 
....u...x.#.. .#.............
.#...#.........# #.. ....   .
#.## #.#...##.....#..##.. # .
.   #.#.(..# #.#.. ∩.##..##..
    #..##.##   #. .    ....  
    ... ...    . ..... .... .
   ...  ....  ... #.. # .##..
  ...#  ...#.  .  #.. #.. #..
  ..#    .##