.         
      #.  ..     
      #. #.      
      .. .#      
     # # .##     
   ###..#_.##    
 .#....#....##.. 
#∩.#..#.#..∩.....
     #...#       
........### #    
 ###....###      
 ...####  .  .   
 (.  #..    .#   
     ###     #   
             .