Hero’s 25% optimal raise/4-bet/call 5-bet-strategy in CO:

{Hero’s total CO range}
={22+,A2s+,K9s+,Q9s+,J8s+,T8s+,97s+,87s,76s,65s,
A9o+,KTo+,QTo+,JTo}
={value hands} + {4-bet bluff hands}
={JJ+, AQ+}
+ (15% 4-bet and 85% fold) x {the rest of the range}

Hero raises {22+,A2s+,K9s+,Q9s+,J8s+,T8s+,97s+,87s,76s,65s,
A9o+,KTo+,QTo+,JTo} =326 combos from CO. If hero gets 3-bet, hero 4-bets {JJ+, AQ+} for value, planning to call a 5-bet. Those times hero doesn’t have a value hand (e.g. 88, A9o, T9s, etc.), hero 4-bets 15% of the time, and the rest of the time folds. Using a random number generator from random.org to randomise 4-bet bluffs .