hubieran reproducido
Past perfect subjunctiveellos/ellas/ustedesconjugation ofreproducir.

reproducir

Sé que si usted no los detuviera, ya se hubieran reproducido hasta ahora.
I know that if you didn't stop them, they would've reproduced by now.
Imagine por un momento las diferencias potenciales en las millones de copias del Código Da Vinci si, en vez de haberse impreso en una editorial, se hubieran reproducido a mano.
Imagine for a moment the potential differences in the millions of copies of The Da Vinci Code if, instead of being printed on a press, they all were reproduced by hand.
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