to have them
Podrías haberlas contado lo mismo, solo tuviste seis, te las presenté yo.
You could have counted them the same, you only had six, I introduced you to them.
— La grande bellezza (2013)
Deben haberlas cambiado o vendido por oro o no sé qué otra cosa.
They must have traded or sold them for gold, or I don't know what else.
— Los muertos no mueren (2019)
Me alegro de haberlas invitado.
I'm glad I invited them.
¿Cómo podría haberlas salvado?
How could I have saved them?