. # # ## . . # .##. # # . . #. ## ..# #. # . . . . #.#. # .4# . ..#..# ..## ##. .# . . ###. #.# . . . #..#.## ..## # . # .. ##.#. .## # ###..# ... ..# #. #... ##. ###..# ##.. .## .##..## . ###.#####.## . # #...###.. ## #. #.#.....#.... #... #. .#.......4........ . 3 #.##. .#.....#.... . ..# #...# ##...###.. ###...## ..#. ##.## ## # #.## #..###...## ...# # #..#.....#. ..X# ..# #............. . .. ##X#.....#.....#. #.###...## x.. ### ##.## #.# ...# .≈ .≈.# .≈... ≈≈≈