........ .......          
               ##......###.....######     
  ..           #.......#.#.....##...#     
  ...        # #.......#.#.....##...#     
   #.#######.# #.......#.#.....##.<.+     
####.......#.###.......#.......##...#     
......................##.#.....##...#     
.........)(#####................##'##  #  
..........((........#.#########....##..##.
....................#.#       #...........
.......[............###       ##...##..##.
#####...............####       ###+#  ##  
 #.........####........#                  
 #.$.......#  #........#                  
 #....######  #........#                  
 #....        #........#                  
 #####        ##+#######   ∆              
                                          
                  ∆