## ..                                      
           #.#...                                      
       .#.#.##..# #                                    
        .#.....  . #                                   
      ###..#.## .#.#                                   
  ##..#.x#..#.##..#.                                   
...........#.##....#                                   
...#....##.....# .   .                                 
   ####.##....#.#.## #                                 
      ##.##...###..  #..                               
      #....#...#.# ..#.. .                             
     ....#..........  # .#                             
     ..#....#.#.##....# ....                           
    ∆. ##..#...#.....#...#.#                           
        #.#.#.##. #. ..#..#                            
       ...#..#..#.# ..#...                             
     ∆.## ......##..#..#                               
        ....##..###...#   #                            
        ##.# ##(......###. .#                          
         #......##.# .... . .                          
           ...#.. .#........#                          
           .. ..##...# #. .#.                          
             #....##. ##. # .                          
             ## _.. #...#..                            
              ####. ...#.#.                            
               #.#.#......#                            
                ##.   .# #                             
                 #. # ..#  .                           
             #   ....  #.#   .                         
              . ### .  #.....                          
                ..x.## .   #                           
              ..   #    . #                            
           #    .#    #.    .                          
               ..  #  . .                              
                .#      .    .                         
                      .                                
                                                       
                         ∆