I'll do your job for you since a hand just came up that might more aptly make provide a point of discussion:
UTG (good reg) opens, CO (good reg) calls, we call on button with 9
9
4
4
.
Flop (12): K
4
8
x, x, I check.
Turn (12). 4
Bet 6, Call, I call. (Debated raising)
River (30): 9
Bet 9.9, Call, I raise pot.
I can have more than quads though, but what bluffs? Probably almost none?