chi pensa che l'abbia

who thinks that … has …

→ chi
phrase Rare #36,009
who thinks that … has … The phrase is usually followed by a past participle; l’ can mean “him,” “her,” or “it,” depending on context.
IT: Chi pensa che l'abbia visto?
EN: Who thinks that they saw him?

Chi pensa che l'abbia aiutata?

Who does she think helped her?

Chi pensa che l'abbia aiutato?

Who does he think helped him?

Chi pensa che l'abbia detto a loro?

Who do they think told them?

Tom chi pensa che l'abbia fatto?

Tom, who does he think did it?