...                                     
...  ...?..                             
 ..  .../..                             
 ..##...$#                              
  ..#....#                              
  #.#....#                              
  #.#....#                              
  #..# #.#                              
  ##.# #.#                              
   #.###.#                              
   #.....#                              
   #.....#. ..                          
   #.....#.#..                          
   #.....#.#.###                        
   #....[#.#...#                        
   ###.#.#.#...#                        
     #...#.....#                        
     ##..#....#                         
      #..#....#                         
      #..#.#'##                         
      ##.#.#.#                          
       #...#.######################     
       #...........................     
       #...#...##########...########    
       #.#.#(..#........'...+......#.###
       #.#[...........###.[.###.........
       #.#.#.#........# #...# #.##.#.###
    ####.)...#........# #...# #.#  #    
    #.....<..#........# #...# #.#       
    #....)...#........# #...# #.#       
    #........#........# ##### #.#    ∆  
    ####.#..>#........#       #.#       
       #...............       #.#       
       #.#.....#.######                 
       #+#...###                        
         ....#                          
          ....