#.#   .# 
           .    #. .
     .   # . ## ...#
    .   .∆.#∩# .. # 
    ##   ##..  #.   
   #.. . ....#..... 
    ............. # 
    #.. .........   
   #... ......# . # 
   #.#.###..##  ##  
   #.........# ..#  
    ##..#u..##  ... 
     #5#..#.     . .
∆    #Zu#####    #..
     #.4## #      # 
     #...#          
    #...#.#         
  #..#.#. ..        
 ...#...   #..      
  ..###.  ..  .#    
 ##    u ###.       
      .Z     #      
    . .      #      
   u#..