.            #    
          .          #.     
           .  ###  # ..   ##
           #.# .###. .   . #
       #####.###  .##.#  .#.
       . .#.... ## # . .... 
        ####..#  ..##...#   
    ###.. .## ...#...##     
    #.###...###.#.....###   
    ##x...##.##..#.  #..# # 
   #...##.##.##.### # ###.# 
  #...##.##.#....#. . . .#  
#..#.. ##..#....#.# ...#.#  
## ##. .##.#.#...## .#. #   
    #.  .#....##.#.## # .#  
    .. . ######  #####      
    #.          #  ∩ #      
                  ##  ##