habían intercalado
-they/you had inserted
Past perfectellos/ellas/ustedesconjugation ofintercalar.

intercalar

Esta incluía una serie de ilustraciones de flores realizadas por ellas, clavadas con estacas al suelo del jardín de la Fundación Ortega y Gasset (Madrid), entre las cuales se habían intercalado varios altavoces.
This included a series of illustrations of flowers made by them, nailed to the ground with stakes in the garden of the Ortega y Gasset Foundation (Madrid), among which several loudspeakers had been placed.
Word of the Day
relief