.... ....... ∆ #....... .......## # #........ ####.####....... ..............# .......<....# ## ######......# ##.. #......# #... #......######## ..# .................####.## .. ######.....r..##.......#... #........####......... #..................... .. #####.......##.###.###... ... ...........##.# #.# ...######..########.###'# .................##.###_+ .. ...<......#####.##..###'# ... ................##..# #.# ..# #.........##.##.....###.###..# #.>..........##..........[..# .......w..........##......#### .......[.....................# #.........##########...)..#### #.........# #.....## #......>... #....## #........... ∆ .....## ..........### ###...# #####