UTG is 44/19/3 over 30 hands
CO is 18/12/7 over 60 hands
BTN is 21/11/6 over 50 hands

I made the 3bet pre flop on the smaller side so I could 4bet over a shove from the donk UTG. Granted a bigger bet of $9 would still accomplish this.

Full Tilt No-Limit Hold'em, $1 BB (8 handed) Full-Tilt Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

saw flop|saw showdown

Button ($140.65)
SB ($43.45)
BB ($28)
UTG ($20.50)
UTG+1 ($106)
Hero ($100)
MP2 ($123.70)
CO ($146.45)

Preflop: Hero is MP1 with K, A.
UTG raises to $2, 1 fold, Hero raises to $7.5, 1 fold, CO calls $7.50, Button calls $7.50, 2 folds, UTG calls $5.50.

Flop: ($31.50) 5, 2, K (4 players)
UTG checks, Hero bets $19, CO raises to $70, Button folds, UTG folds, Hero ???,