##########++
         #+##...........
         +.##......#..# 
##########.##.......... 
#.....v.v...†...........
#+#####'#####......#..#.
      #a#   #...........
      #.#   ####'#####+ 
      +.#   #.......#   
      ###   #.......#   
            #.......#   
            #...<...#   
            #.......#   
            #.......#   
            #.......#   
            #########