... ... ####.#### ## ....... ..# ..... ... ∆ ... #.# #.# #.# .# ######'###### #.##.# ∆ #...........###.##.# #...........'......# #...........###..#.# #...........# ##.#.# #..........)# #...# ###...........# ##..# #..)).........# #..# #..)########### ##..# ...#..)### #..># ..........##############.# ###........e......... #.# #.........)........ #.# #.................. #.# #.................. #.# #.................. #.# #.................. #.# #.................. #.................. ................. ...............