I like the turn c/r and call a three-bet, I know the 10/20 is pretty aggressive but I think c/f the river UI is a good play after the turn aggression. I think the river is a bet/call, as I'm not sure KK would bet this but might call. I'd have to agree with Stellarwind who I think said any c/r and then 3-bet is likely to be another A or the off chance that villain 3-bet with 66 or some combination of a 6.