Possible Results:
hubiéramos retenido
-we had kept
Past perfect subjunctivenosotrosconjugation ofretener.
hubiéramos reteñido
Past perfect subjunctivenosotrosconjugation ofreteñir.

retener

Si la hubiéramos retenido aquí, hubiera sido el centro de la historia.
If we'd kept her here, she would have become the story.
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