...         
     ........      
     .........     
      .........    
      #..... .#    
 ..   #.... ..#    
 ...###...  ..###. 
.....o...###.......
 #........_O.......
.......#.....#.....
 ..... #_.<._#   . 
 ....  #.....#     
 #.. ....._.....   
  .......###...... 
   .###...  ..###. 
      #...  ..#    
      #...   .#    
      ...    ..