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