.........# .........# .........# .........# .........# ∆ .........# .........# .........# #####....# #...#...Y# ####### #...####.# #.....#####+##...#....# #................+....# #...........##...##...# +....<##....##...##...# #.....########........# ####+## .............# ...##...###### ## #...# #...# #...# #...# ##+##