..##                          
    ...#                         
     ...##      .#.              
      ...##    ...               
       ...    ...##          #   
   ##  #.# #  ....#         .    
   #..##.##.  ..#.    #          
   #.....W# ..#..#    ..# # #  ..
   ##...##..v..#       . #.. ... 
  #.....# #..#.#    ## . .#  #.# 
  #..##3#..#...#   #.# #... #    
 ..#. ..# ####.# ## #....##. . . 
#. .  ...    #..#. ....   .. ..  
. #  .#.#...  #.##.##. . ..      
     .#.##.#...#.#..### #. ..#   
        #...##.##.#..# .... #. . 
        . .. #. #.. ##  ..   .#. 
        # .  . # ..#.# .. #    ##
        #.   ..# ## #..  .. .#.  
            ##.######..# ## .  ..
              .     # .      #  #
                      # . .      
                    ..  . #..    
                    .    #  ∩    
                     .