Not sure, but the most damaging one I found is Slide shuffle P, 6PPK (cancel into Slide Shuffle K critical burst). If you're asking for combos, it would be Side step --> 4H+K, FSK x 3, 4H+K, 4H+K, 7K on light-mid weights.
Free Step Dodge
samuraihachi
KING JAIMY
It might be H+K > 66H+K4 > BT P+K > 66H+K on Counter Hit. Usually you have to start with slow moves which are highly damaging to get the most damage out of your CB setup.
samuraihachi
^ That setup sounds like it would really hurt. Gotta try it out later.