.#.     .# .  
    ..  .  u.. ..
   # ..  . ..#...
  ##. .# .#..#.# 
 #.x.... .....   
.#._.....#u#.#   
 .#.##.. .u.#    
 #. ..### u.#    
 # #.......####  
 . ## ###. ##.#  
###. .. ###uuu#  
... ... # #####  
.#..# ###.#      
.... ..  . #     
.##.. ..#...     
. .##...         
.#.##.# ##