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