.         # #                  
         .# ##   ##                 
       #  #.       # #              
       ..  .. ..# ...#              
       # # #  ..# # #               
         #   ###. ###               
              . #.                  
      ##   ###..#.##                
      #. ...#.# ###                 
       # ##.# # ..#                 
      # #.##  . . #                 
      #∩.#..### ..#                 
 {    #.### .......## .#            
         .###.# .###.#.             
       # . .#..    .#.#             
      ##.#.##.#####...#             
     ##...#.#.##...#.####           
     # ##  ##.#..#......#           
 .#####..#.#.#.....#                
  ..  ...#..#.##.#.#                
 #. ##.#... #..####x#               
#.  ..#####.# ##   #.#              
   #.#    #..##     ##              
  #..     ##...                     
  ##       ..#.#                    
            #..                     
             #..