###  
              ## ..   
         #### ..#.#   
          ..# #. .#   
          #. .#...    
     ######..##..     
     .# .# ..##. ##   
      ∩...#...#...#   
     ....##..#.#.     
     . .#..## ...##   
      ..###.......#   
     .........4...#   
     ....#.#.##...#   
  .#####..##.##..# #  
  #..#....#.#.#.#.# . 
  #.#.##...##.4#.. .##
   #.#.#. ##..##.# .# 
   #....##....# ##...#
    #.#..##.# .#   # #
    #..#X..#.#.X.#    
    #...###.#.......  
  #..###.# #..#. #..  
...     ##  ####.# #  
.               #..   
                 ..