### ###          #########           ###    ###   ####  ######  
 #.###.############.##.##.#############.######.#####..####.#..## 
##.............................................................# 
#...............................####.........D..H..#.#######...# 
##.............................##  #...............###     #...# 
#........#.#..##...............#   #.#.###+P.##+#..#       #...# 
##.......+......#..............#   #.#.....#.#  .#.#      ##...# 
 #....)........................#   #.#.......# ..#.#      #....# 
 #...#...#..>...#..............#  ##.#.....#.#...#..      #P...# 
 #.#####.#........###.#.##.....#  #..#.......#...#.##     ##...# 
 #.#   #.#.....[..#  ... #.....#  ##.#.....#.#... ..       #...# 
 #.##  #........#.#   .. #.....#####.........#        #    #...# 
 #.P#  #.#......#.#      #.....##.#..#+#####.#        ..####...# 
##.##  #.+......#.#     .#...................#        .........# 
#...#  # .......#       ...........######...          ####.....# 
##.##         r          #.........#              D      #.....# 
 #..                    .#........##           P        ##.....##
 #...                   .......<..#             #       #.......#
 #....                  .#........#             #..     ##..$..##
 #.....                  #........#             #....#####.....# 
 #..##.#  P             #.........#             #.......†$.....# 
 ...# ..                ...........             ..##...##....>.# 
                        ............            .........#.....# 
          P           P #######..##.#           ......t..#.....##
                              #..# ##           .........#......#
                                                ..#......#....(##
                                                . .......#.....# 
         PP                                      .+..."..#.....##
                                                         #......#
                                                         #.....##
                                                         #.....# 
                    r                                   .......# 
                                                       ........# 
            ∆              D       ∆                   ........# 
                                                       ........# 
                                                        .......  
                                                                 
                                                                 
                                    S                            
                l ∆                                              
                 P                                               
                                      ∆      ∆                   
       P                          PP     ∆    ∆          ∆       
                                        S                        
                          P                               Y      
                    P                 P        P           P     
                                           ∆                     
                    P                       ∆          Y         
                          P                                      
              ∆                                       ∆          
                          P                                      
 P                  ∆                     P                      
                                     ∆                           
                           P         P              P