##########                      #######
     #.........                      .......
     #.########               #####  .......
     #<>.......                ...#  .......
..   ##.########################..###.......
...  #.....#....#............5....#.a.......
....##..##.#.##.#.###############.#.#.......
...........#.##.#.#####   ..........###.####
.............#........#   #######...#   #   
##....................#         #...#       
 #...........#........#         #...#       
 #....................#         #...#       
 #..........##........#         .....       
 ######.................       #.##..#      
      #..#####........#.       ..  ..#      
      #...   ..........                     
      ##.#   ##......#