CO vs UTG raise
How to defend from the cutoff after the UTG opens: which hands 3-bet, which call, and which fold.
Hand by hand
Always 3-bet: AA, AKs, AQs, AJs, ATs, A5s, A4s, AKo, KK, KQs, KJs, KTs, QQ, QJs, JJ, TT, 99
Always fold: A6s, A3s, A2s, K9s, K8s, K7s, K6s, K5s, K4s, K3s, K2s, QTs, Q9s, Q8s, Q7s, Q6s, Q5s, Q4s, Q3s, Q2s, AJo, KJo, QJo, J9s, J8s, J7s, J6s, J5s, J4s, J3s, J2s, ATo, KTo, QTo, JTo, T8s, T7s, T6s, T5s, T4s, T3s, T2s, A9o, K9o, Q9o, J9o, T9o, 98s, 97s, 96s, 95s, 94s, 93s, 92s, A8o, K8o, Q8o, J8o, T8o, 98o, 86s, 85s, 84s, 83s, 82s, A7o, K7o, Q7o, J7o, T7o, 97o, 87o, 75s, 74s, 73s, 72s, A6o, K6o, Q6o, J6o, T6o, 96o, 86o, 76o, 66, 64s, 63s, 62s, A5o, K5o, Q5o, J5o, T5o, 95o, 85o, 75o, 65o, 55, 53s, 52s, A4o, K4o, Q4o, J4o, T4o, 94o, 84o, 74o, 64o, 54o, 44, 43s, 42s, A3o, K3o, Q3o, J3o, T3o, 93o, 83o, 73o, 63o, 53o, 43o, 33, 32s, A2o, K2o, Q2o, J2o, T2o, 92o, 82o, 72o, 62o, 52o, 42o, 32o, 22