D. (In standing tumbling only)skills involving two twists (i.e.Double fulls)must be immediately preceded
by a minimum of two backward traveling, non-twisting tumbling skills. One of these two skills must be a back handspring. (Jump skills are not considered tumbling skills. i.e. toe touch > back handspring > double full = illegal).
From what I've read on here between Les and Andre, it doesn't matter HOW many BHS you do before your double full, one of the two IMMEDIATELY before MUST be a BHS.
As in RO blah blah blah blah X X DOUBLE FULL, one of those two Xs HAS to be a BHS. The other can be a BHS or a whip.