hubieran ocultado
Past perfect subjunctiveellos/ellas/ustedesconjugation ofocultar.

ocultar

Si no nos hubieran ocultado información, podríamos haber hecho algo al respecto.
Had they not hid information from us, we could have done something about it.
Asimismo, lamenta que se le hubieran ocultado dos detenidos en la comisaría de Bata.
He also regrets that two inmates at Bata police station were not allowed to meet him.
Las vidas de muchas personas habrían sido muy diferentes si no le hubieran ocultado y escondido tanta información a la humanidad.
The lives of many would have been so different if they had not taken and hidden so much from humanity.
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