Word/Phrase: supieran
Translation: they knew
Pronunciation: suˈpjeɾan
They knew the answer - Ellos supieron la respuesta
I thought they knew - Pensé que ellos supieron
Did you know they knew? - ¿Sabías que ellos supieron?/I wish they had known - Ojalá ellos hubieran sabido
If only they knew - Si tan solo ellos supieran