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