I found a pretty decent combo that works when you're near a wall.
2 or F1, D2, (slight delay) U1(11), jump U1(11).
Nets a lovely 140 AP, pretty easy to get the hang of. Just gotta get the hang of delaying a bit so they don't fly too high, and also the timing of the jump into a second U1 combo. 2 or F1 work as an opener, since they both knock down and give 20 AP.