hubieran confundido
Past perfect subjunctive ellos/ellas/ustedes conjugation of confundir.

confundir

Era como si sus diferentes edades se hubieran confundido, entremezclado, y como consecuencia hubiera surgido un nuevo y milagroso ser constituido por ambos.
It was as if their different ages had been confused, got mixed up, and as a consequence, a new and miraculous being had arisen, made of both of them.
Word of the Day
Christmas carol