###        
   #..        
   #.#        
   #.#        
   #.#        
   #<#        
   #.#        
####.#        
#....###.#    
#.#......#    
#.#{######    
#.#.#         
#.#.######### 
#...........#.
#.#...........
#.####{..##...
#    #..##    
     #....    
     #...#..  
     ....# ...
   ∆ .....  #.
   ∆ ####.#   
         .#