In long corner combos ending with DF3U3 allows you to both keep the opponent in the corner as well as have ambiguous jump options after the combo...
Corner F3 Starter (22 Hit 511.07)
F3, J3, 11, 11, 112~4 (Lv 3), J2, 21~BF2 MB, J2, 21~DF3U3
Ambiguous jump options after the combo are:
Stay on...