NL 1/2 What Does This Donk Have....

[Lucky]

and can we make him fold?

he's at 36/11/2; He should view me as decent player, who's maybe 'raising too much when he plays.'

No Limit Holdem Ring game
Blinds: $1/$2
6 players
Converter

Stack sizes:
UTG: $400
UTG+1: $72
CO: $166.84
Hero: $256.10
SB: $185.55
BB: $413.30

Pre-flop: (6 players) Hero is Button with 9[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/heart.gif[/img]
UTG folds, UTG+1 calls, CO calls, <font color="#cc0000">Hero raises to $12</font>, 3 folds, CO calls.

Flop: 7[img]/images/graemlins/diamond.gif[/img] 2[img]/images/graemlins/spade.gif[/img] T[img]/images/graemlins/diamond.gif[/img] ($29, 2 players)
<font color="#cc0000">CO bets $10</font>, <font color="#cc0000">Hero raises to $33</font>, CO calls.

Turn: 3[img]/images/graemlins/heart.gif[/img] ($95, 2 players)
CO checks, Hero checks.

River: J[img]/images/graemlins/heart.gif[/img] ($95, 2 players)
<font color="#cc0000">CO bets $12</font>, Hero???