.#..       
           ....     ##
           .....    .#
  ∆      .#......   .#
         .#.#.....  .#
       ##.#.#..<.###@#
      ##....  #....(.#
      #....   #..#.#.#
      #...#.# ##.#.#.#
      #...#.####.#.#.#
      #............#.#
 #    #......###.###.#
 #..###.###..# #.#  >#
 #...........# #.#  .#
 #.####.####.###.###.#
      #.#............#
 #.####.#.##.#########
#.........##.#        
#.##########.#        
           #.#        
           #.#        
           #.#        
           #.#