thank you! AJs is indeed calling a jam. In this spot at 30bb your 3bet bluffs should be offsuit hands that contain blockers to opponents continues (eg a4o, a7o, k5o, k6o, q8o, q6o,j8) at a small frequency. You dont wanna pick suited hands in that stack size depth because a hand lets say like k6s or j8s is too good to be played as a 3bet bluff and it has great post flop playabillity vs CO opening range so you prefer to call and see a flop. Your 3bet jam range should be mostly pairs from 22-tt ajo, aqo, ako (you prefer to induce the suited version of these hands again due to their post flop playabillity).