hubieron traído
-they/you had brought
Antepréterito para el sujeto ellos/ellas/ustedes del verbo traer.

traer

Les decía que le molestaba mucho que lo hubieron traído a su hijo reducido a tan poco espacio.
He told them it bothered him greatly that they had brought his son reduced to such a small space.
Palabra del día
la guirnalda