hubieran prolongado
-they/you had extended
Past perfect subjunctive ellos/ellas/ustedes conjugation of prolongar.

prolongar

Popularity
1,000+ learners.
Es totalmente posible que los esfuerzos se hubieran prolongado más allá de la propia Guerra Fría.
It is entirely possible that the effort would have outlasted the Cold War itself.
Word of the Day
candy cane