.. ..........#        
   .##.........#        
    ...........#..      
     .............      
     #.......##..       
     #.........#        
     #.........#        
     #.........#        
     #..#.#..###        
     #..#....##         
.......a###...#         
.......## #...##        
.......   ###..#     #  
.......     ##.##   .#  
#......      #..####.## 
###....      ##.#.....##
  #....       #<.......#
              #.........
              #.........
              #.........
              #.........
              #.........
              ##.......#
               .........
               .........
               .........