...j.b j.c JC j.2c - good luck doing anything after j.2c without a pumpkin or frog nearby
...j.b j.c JB j.b j.c j.214b - pumpkin to catch the air-tech. not quite what you want, though.
...jb j.c JC 2d j.2c (level 3) - they won't hit the ground before teching, though, iirc. still gives you time to summon a frog or pumpkin
Or you could sacrifice a bunch of damage to do 5cc after 214c, but you might as well have just gone for a frog combo, in that case.
It's actually more beneficial to start with 2a into 2b, if I'm reading Spark's proration data correctly. :8/:
Feel free to check my math (and my logic, as I might be misunderstanding the chart):
4b 5b 5cdc 236b... - 2714 dmg
Strip off 4b for...
5b 5cdc 236b... - (2714 - 600) / 0.9 = 2348 dmg
Tack on 2b for...
2b 5b 5cdc 236b... - (2348 * 0.7) + 360 = 2003 dmg
Alternatively, tack on 2a 2b for...
2a 2b 5b 5cdc 236b... - (((2348 * 0.84) + 360) * 0.85) + 150 = 2132 dmg
Of course, it could've always been that way, and I just didn't realize.