50 50 .................................................. ....................#.......#..................... ..........#.....................................#. ...........#..###................................. .....................#........#AA.......#......... ......#.........#..#..........AA.................. ............................................#...#. ...#.......#..........................#........... ......#.......#.#............#....#.............#. ........#.........#.............................#. ...................................#......#....... ......#.#.........#...................#........... .....#.#......#.......#..........#....#.....#.#... ................#.......................#......... ...............###...........#.#......#........... ........#..........................##............. ....#.......................#.....##.......#....#. ....#......#.#........#..#..........#......#...#.. ..........#.....................................#. .....................#.............#......#....... ..........#.........#.#..#.......#..#.#...#....... ................#...#............................. ..#..............#.#........#..#............#..... ...#.....#............#........##.........##...... ...#.....#.......................###.....#.#...... ..........#..................#.#.................. ......#..................#........................ ...#....#.....#....#.......#................#..... ......#..........................#.....#.......... .............#.................#..#............... ............................#..................... .....................#.................#..#....... ..................#..................#............ .....#..#....#....#.........#........#......#...#. ...#..........##...........#.................#.#.. ..#................##..............#.....#........ .#...#..........#..............#.................. ....#.#..#.....#....#....#..........#.........#... ..#.........#......#.......#...................... ...........#..........#.#........##...#........... ......................#........................... .#..#.#..#.........#......#....................... ...#.............#...#.......................#.... ..#......#...............................##....... ........#........#.#.................#...#...#.#.. ......................#........................... ..............#..#.....#.........#.BB.......#..... ..................#.#.......#....#BB.............. ....................#.........................#... ..................................................