15-16 and 19 are chaotic, but sublevel 15 isn't THAT chaotic, and 16 is probably it is hard to teach someone, or memorize it yourself, because of that chasing wall. It took me like 1-3 months to memorize it, since i used 12-A route to skip 13-19, so i almost didn't play 13-19 sublevels.
pm 606 is a weird-type of game on roblox based around the winning smile face. the game would have been really interesting if it wasn't for children like you.