to have died
Pudiste haber muerto, fue mi aniversario de matrimonio.
You could have died; it was my wedding anniversary.
— Piku (2015)
Si no hubiera sido por el tratamiento médico, este paciente pudo haber muerto.
If it hadn't been for the medical treatment, this patient could have died.
Sin agua, los soldados podrían haber muerto.
Without water, the soldiers could have died.
Podría haber muerto esta noche.
He could have died tonight.
Quiero demostrar que Santiago pudo haber muerto sin veneno alguno.
I want to prove that Santiago could have died without any poison whatsoever.
— Algunos hombres buenos (1992)
Os tenéis que haber muerto de aburrimiento.
You must have been bored to death.