##########       #
         .........      ...
         #......>#####.....
.        #.........<...#   
....######....>..#######   
.........#[..(.^.####      
....####.####.......####   
.....###..######....(..#   
 ...........####.......#   
 ...####.##...).......$#   
       #.######..........  
       #...######$...#.##  
       ###....##..#.##.(#  
         ####[...##.#  .#  
           #....## .#      
          ...##...#        
         #...  ##....      
     ∆   #...     ...      
         ....      ..      
        #....    ∆  .      
        ##...