.           #   
         ..  .         .   
           ..        ..    
            . .    ...  ## 
      # #  #     ## #. .   
      ...# # . ###. . . ...
   .#.  .  .  ..   ...  .  
    .   ... ....... .#    .
    #. . .#. . .# ...  ..# 
.    #... ## ..## ... . #  
 .#  ##.## ##.## # .#.# .# 
.. ###...## . .### . .#    
 ...#.....#... ......#...  
 ....  . ............# . # 
   .#. ...#. ...#.. .#   ..
    ##...  #... ##...... .#
     ##.## ##.## # .### . .
    ##...###...###...      
   .#.....#.....#....#.    
 ....... .............#.   
 ...#.....#.....#.  ...    
 .)###...###...##  ...#.   
#.#  ##.## ##.##  #.#..#   
 .    ... ##...###....#    
    #.....#....b#.....##   
   .. ........bb.......#   
   .#∩ ...#.....#....##.   
      ...###...###....#    
      #.#  ##.##  #.#...   
      ..   #..     .....   
          #...      . ##   
         .....       .     
        ..#.         ##    
        .###