.. ..........#   
           ................ 
           .......... ..... 
           .. ... .......#  
             .. ..... ...#  
            .  ....... ..#  
            ... #. ......#  
             ..## .......#  
           .............∩+  
          ...............#  
           .. ...........#  
         ................#  
         #...........#...#  
         ............#...###
         #....#.............
         #..................
        .#.. ..##. .##.#..##
        .....##..#.## . ..# 
        .......#X#.#  ..#.. 
         #..##....##   .. ..
         #....###.#     .  #
        .....   .##     .#  
        ##.#   .#           
         #