#####               
    #...#               
#####...##              
.........########       
................#       
................#       
......†.........#       
............†...#       
#######..e......#       
      #.........#       
      #.........#       
      ##'#.#'#.#########
       #.#.#..S........#
       #{#.###e#######.#
       #.#.#.......# #.#
       >...#+#.###.# #.#
      ...... .<.     #.#
     ............    #.#
    .............#   #.#
   [.............#   #.#
  ...............+   #.#
        .........#   #<#
                     ###
                        
                ∆