.
         ########  ...
  .#######......#.....
  ............†w......
  ########.####.#.....
      ####.### .#  ...
   ####......# .#    #
   ..##.##.#.# .#     
   #.##.#..#.# .#     
   #.##....#.# .#     
   #.#######.# ..     
   #.........#        
   ###......##        
     #.......#        
  ...........#        
 ............#        
.............#        
.............#        
.............#        
.............#