.#                    
   .#                #  
  # u###            .#  
## .#...    ####   ..#  
... ....  ###..###..#   
##.. #.. ##..##...      
.....##.##...#..#..#    
.......#....###.#.##    
      #.X#### . ###     
      #..#...# #     .  
     ##..#.  #.#.   .#  
     #.....  .##∩ # . # 
     ###.#.#.##.     .  
     ..#...#.##.    .#  
      #.#####. ..#. ## .
      #. ..# .#.#..##.. 
      ##. .##..#.  ..#  
       ### #..#.#... .#