^ This is from the strategy guide, a 2-in-1 is a two hit combo in which the second attack be blocked, evaded, countered, or otherwise avoided if the first hit connects.
A 2-in-1 combo for her is: :4::6::P::P:
A 3-in-1 combo for her: the first 3 hits in :4::P::P::P::P: is a 3-in-1 combo.,:6::6...