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