#.....#    
            ##.....##   
           ##∩.....∩##  
           #∩.......∩#  
           #_......._#  
           #_........#  
           #........_#  
         ###.........###
         #a...........⌠#
    ######.8..a......8.#
   ##∩___......###......
 ###∩........8.#  .8... 
 #.............###..... 
#⌠..........###...#  .  
#⌠..........# #.a.#     
#⌠..........# #...#     
##.............###..    
 ###∩........8.   .8..  
   ##∩___......#   .....
    ######.8....   ..8.#
         #⌠....     ..⌠#
         ###.       .###