###....#  
        .....              .......#  
       .....#       ∆    ###.#....#  
        ....             #..(.....#  
         ...             #........#  
         #.#             #........#  
         #.###           #........#  
..########...#           #.....#.#   
.............######      ###.#?#.#   
#.......###.......#######  #.....#   
###.#.#..###(####.......####..#..# ##
    #.##.# #.#  #######....?..#..##.#
    #..#.###.#  #######.####..#..#..#
     #.......####.......#  #..#..#.# 
     ##...........#######  #..#....# 
 ∆   ####..#....###        #..#...## 
     #.....#.##..#         #.....##  
    #..###.#.#  ..#        #..##.#   
  ....   #.#.#    .#       #...#<#   
 ..##    #...#####/##      #.....#   
 .       ###wr......#     #...#..#   
           #r....!#.#    #..#.#...   
           #......#      ..##.#.#.   
           #...(..#     .## #.#. ..  
           #......#           #. ..  
           ...#####           #. ... 
          ...##                      
         (..##      ∆                
        .##.