...
             ...
    ##      ....
   ##.     .....
  ##..#####.....
  #..#.....#....
 #..#..?....#..#
   #....<....#  
#...#.......#..#
..#..#.....#....
...#..#####..##.
.# ##.     .##  
    ##      .   
            ..  
             ##