. .. # .... . .. . . #. .. . # .. . .. . # #. ...##...### #. ...##... . #.####...#..###... #.#....##..#.....# .#...#.#.......#.# #.3........##...## . #.#........##. ..# . # ####..#.....# ...# #....#....... .. #........#....## #.......#......∩ .....#.##.......## #.#.#... ..##.. # ....##. ##. ..# # # #