If the main clause uses a tense that implies a past action, for example El Pretérito Indefinido or El Pretérito Pluscuamperfecto,then the por si/por si acaso clause uses a past tense.
Habríamos is conditional tense
If the main clause uses a tense that implies a past action, for example El Pretérito Indefinido or El Pretérito Pluscuamperfecto,then the por si/por si acaso clause uses a past tense.
Habríamos is conditional tense
Hola Shirley
Which sentence are you referring to? I checked and there is no sentence using "habríamos".
Inma
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