to have seen it
You should have seen it.
Akira Shoji y los jueces tienen que haberlo visto.
Akira Shoji and the judges must have seen it.
— The Smashing Machine (2025)
I remember seeing it.
Me parece haberlo visto en una película.
I think I've seen it in a movie.
— Las noches de Cabiria (1957)
Recuerdo haberlo visto antes en otra parte.
I remember seeing it somewhere else before.
Recuerdo haberlo visto en la estación, llevaba una maleta grande y parecía tener prisa.
I remember seeing him at the station; he was carrying a large suitcase and seemed to be in a hurry.
Todos los amigos de amigos que dicen haberlo visto.
All the friends of friends who say they've seen him.