... c.. ## .. .. .. #.##. ∆ ... ######.######### ∆ .......c(......# ...# ##############.## #...# ... ∆ # #....##....# #.# . ##...##... .# #.##.##.##.# #.# .. #........####################.# #.#..#....##.###.# ... #........#.................... #.##.####.##.....# .>..####........#..#...#...#...#...#######.##.# ########## ................#_.........................##.# ........<..h....#..#...#...#...#...#........#.# ..$.............#...........................#.# ...............>####################........#.## ................... #.............# ..##............... #..<..........# . +................ #...........<.#∆ ##........$...... #......#####.## ..####...###..... #........ #.# .. #.?.# .....∆ ###..........# #...# .... ..###...##### #... .... .. #...# .. ....