#.###         
     #.    ....#         
     #.### #.#.#         
    ##.... #.#.#  ####   
    .....###.#.# #...    
     #....^..#.#... ∆    
      #........#.###.#   
      #..............#   
     ##........#######.# 
     #...4....).(..<...# 
     #..@4....########## 
     #..3.....#          
..............#          
....>#...#.####          
.....#.!.#.#        ∆    
.... #####.#            ∆
...      #.#             
###      #.#             
   ∆      .#