.                         
                                      
                                      
                #                     
                                      
                                      
  .            .                      
      #        #. #                   
    #                     #       ##. 
             .∩   ..   #  .#      ..#.
    #      .     ##.. ##. ..     .#...
                  ...##...#.     ....#
          .  ..   ......#.#.    ....  
#         .  #    #.........   #..#   
 .           ..   .#....3##.###..##   
       . . . #  ###......§##.u.#..    
           ..# .  ....#.#...###.#     
   #       #  #   . ... #...##.#u#    
     # .  .#...    #..  #.....##.u.   
            .  #   ##....##..u......  
     .    # #..##.  .###.#.##.#.......
    #     # ..#   .    ###..#...#.....
  #   . .#.. ..       # .#..#.#.# ....
  .     ...   .   . .##. ..#....#     
          .. ..##.   ###.####.###     
    #  .   ##.##. #. .# ......#       
         . ....#  ... .#...###.#      
      . .#. .. ##.. . .#....#  .      
         .. # . . ....#.##.##   #     
   .    #.  ..# .#. ##..##.           
         #...    . # # # ..#          
            ##.  .. . . ...#          
        # ... ..#.#...#..# #          
            . # .####.# # ..          
          .# . #.   . #  #.  #        
         #     ##  #      ##...#      
           # .                #       
                            #