.#.            
       ..            
    #   .#           
    ..###.           
     .....#       ##.
       #...###  #... 
       #.#...##..#   
       ##.#u...# #   
  #.   #.∩..#.....#  
 ##.# ###..###....#  
 ..  ##...#.##.#..#  
 .   .###.##...#.#.. 
  ..... ##....##.. #.
   #..#.##........#  
   #.# ...#....#..   
  #...#..# ... ..#.  
  . #...### ##.. ..  
    #..#.#. ......#. 
   # ...#....##....  
# ..#...  .....#..## 
#..   #.#...#  .. .. 
 #    .#.#.. .... .  
      # .  #.... .   
 #. . . #  #.#..#≈≈# 
  . .###  ..#. .. .