I know
Sé
You know
Sabes
He knows
Sabe
We know
Sabemos
You know (vosotros)
Sabéis
They know
Saben
I knew
Supe
You knew
Supiste
He knew
Supo
We knew
Supimos
You knew (vosotros)
Supisteis
They knew
Supieron
I will know
Sabré
You will know
Sabrás
He will know
Sabrá
We will know
Sabremos
You will know (vosotros)
Sabréis
They will know
Sabrán