.#              
#.               
  .#             
# . ###          
##..#            
#.#. .           
 ##   ##  #      
#....# .  #      
.#.. ... ###     
 #....#..#.##    
.####..##...#    
.#  #####.#.#    
.#      #.#.#    
#      ##.# #    
      ##...#     
      #..##..#  ∆
      #..###.### 
     #.#........ 
     #.#.#...### 
     . #D##...#  
    ## #?. #.##  
       ...# .#   
       #..#  .   
       .#..   #  
       # ..      
         ..#