. . # # . .# #. # # . . ... # #.. ##.#. #..#. # . ∩. ..## .. # .. .#.#..#.#.. ###. #....... .## .# ##. .......#..#..## ..### ##..#......## ## .##..#.....#.#....#. .# ...##..#..#..#....#... ...##.#.#. ....... .## #.......[..##....## . #......#..#.#....... #'''# ###..#......# #...# #. ## ... # . #..2§# ###.. # ##.. #...#§# ###.... .#. #...##≈§ # ### .. #..R# ##§ . ≈..§# ≈# ≈#..§. . #≈#..§.