. . # # . . # . . ## .. . # . . ... # # . .# . . .. # # . .. # # .## # # .....# ## # # . ....#. . . . . ..#. . #. . . .#. ### .# .##. # ..#... .# ..# # # .## . #.#. #..#..##.# # . . .. ... §#### .#.#..##.# . .. .#........... ## . .# ..# .. ..#.#...#.# # ..# .. .. #. .. ...# . .... .... . .# ##. .. . . # #.## ##.(## #.. .# #. .. #. .# . # .. . . # # .# ##.. ###. ##..# . .. .# ...# #.#...# ... . ..... ##....## #. #. # .# # #....##......# # # . .. .#....#.#...# .. # .. . ###....#.#.# . # .. #.#.....## # . ..# . #.##. #......#..# # ..# ......##WX##.#....# . . . #...X.#....# #.. . #...#.....##.#..# . . # . #.###........ . #.# .......#. . . ...# ∆ .##... . .#.# #. .## #.. # # .