...         ##          
   . ...       .....        
   #.∆..   #. #.#. .        
   ...#x  #. #.##..  .  ##  
     ...##.##.##.. ##.  .   
       #x.#.....#  ... .##  
       #.....#.#   ..# ..#  
##    ##..#.#..# ###X...#   
#..# ##h..#....#.# ....##   
  #..#.....#... .###.  .#   
   #.....##.#.#.# #..# #    
   ######.####.##. .#..#    
         #.. #.X.. .#.#.#   
          ######.###.###..  
              #...... ...#..
             #.###..#.#..# .
             ## ...#.....#  
            #.. .#...#....  
           #. ## #.. ##...  
             ##.#.  #   ..  
             #.#.##         
             #  .##### .    
             ## .#..#..     
             #..#.. .# ##..