..   ......    .              
      .   ..##  ##..#  .#              
      .  # . #..##..##. #              
             . ........ ..             
    .   .....   . .... .               
         #  ##. ##..# ..#              
     #    ..  .. #..##..##             
         . ........ . .. .             
    .   .    ...... .............  .   
       .  ..# ..##.. #..##..##..# ..#  
        # ..##.. #..##..##..##..##..#  
   . . . .  ... ...................    
            ...... ..W...(......       
 #   ..  .. .#.. #.. #..##..# ..#   #  
     #.     # ..##..##..##..##.X##  ##.
           .... ...............X.X.....
     #   ..#   ................X.......
       #  .  #..##..##..##..##..##..##.
      .   ..##.. # . #..##..##..#  .#  
      #.    . ..... ..............   . 
          #. ... ..................  ..
   . ...   ..# .# ..##..##..##..##..   
 #    #(       .##..##..##..# ..# ..   
    . .  ..      ....  ..              
   ..  .  . .                          
          .                            
.     .  . .                           
         .                             
  ∩    ..