##      
                 ##.       
                  .# ##    
    ∆    ###   ###.##.##   
          ... ##..#....#   
           ##..##....#.#   
         ###.##.....5.#    
         #...#.###.....#   
      ####.... #..#..#..#  
  #   #..#.#####.##...#..# 
  #.# #.# ..# #.. #.#...#.#
    ..##  #.#..#  ...#.#. .
     #.#. ...##   ##. ## # 
      #...# #       #.     
      #.#.#  ##..#         
      #.... . ..#          
      ##.# ...# ..#        
##### #.#..##..##.         
....###... ##.#.. .        
. . #... . . .#.. #