.#
..   ####   ...
... ##..## ....
...##....##....
...............
...............
.....M..M.....#
+##........##+#
  ##......##   
   ##....##    
    #....#     
    #....#     
    #....#     
    #....#     
    #....#     
    #....#     
    #....#     
    #.∩∩.#     
    ######