.        
              .#        
         #####.         
        ##....          
  .#   ##....#######    
  ... ##...........#    
   ...#..#.###'###.#    
 . #..#. #.# #.# #.#    
 ..#.#..##.###.###.#    
 #...#.....'.._###.#    
 #..#......###O###.#    
 ...#......# #.# #.#    
   #.......###'###.#    
.#.#...#...........#    
.......#.......#####    
  .#...<.......#        
......##.......#        
....#  #.......#        
...    .######.###      
.      .     #...#      
       .     ###.#      
      ..       #.#      
               #...#    
               .#...#   
              #. ....#  
              ## #.#..# 
                  .#....
                  .# .##
                  ..  .