.       
                     .       #        
                      .     .         
                     #     #          
                      #    #.# #      
                  #   # .   # . #     
                       .  .   .. .#.  
                    .    #  # .#      
               .   .....      ....   .
             ..   . ....  ## #   #  . 
            ...  .  .....# .   #      
           ....#     ....# ..  #      
 #        #....#    # #.. W.#WW#      
 #.    ∩##....##########..##n#  #     
 #..  ##..##..#........#  #  .  .     
  #.. #v.....#.#. ..# ...W##.   #     
  #...#.v.....##.nW.# ## #.  .#       
    #.vXv...v.#..#.#..np##.  .#       
  #..#....#...#.#####... ###.. .      
 #.##..##v...vp....#.... #            
 #....# ##v....###.#..####   ..       
 #...##...#.####   #. #       . .     
...#? #...###       #        # #      
#.#.# #.##                            
#.## ..#                              
    ...                               
   ..#                                
   #.