.#
       ...        ..#
        ..       ..# 
        #.#     #.#  
         ..     .  .#
        #..### .#.u..
         ##  #...#   
         #....##     
         # ..#.#     
           ##.##  .. 
 #  ##   ####.# #..  
##.   ## # ..##..#   
   .# #. # .....###  
  . .##.###........  
.# #.#...#..##...# # 
  # .#....u...#..#   
. .  #.##..#.. #.#   
.....#......3..##.#  
#.  .#.###......#..  
# .  #.#.##.##..# .. 
# .# .. . .## .##    
#.# #..#      ..     
# . .. ### .   ##    
.. # #. .. #         
.. .   .   ..        
   .   ##  .         
  #      #  #        
 #  .     # .        
 ...                 
 .# .