I know
Sé
You know
Sabes
He/She knows
Sabe
We know
Sabemos
They know
Saben
I knew
Supe
You knew
Supiste
He/She knew
Supo
We knew
Supimos
They knew
Supieron
I knew / used to know
Sabía
You knew / used to know
Sabías
He/She knew / used to know
Sabía
We knew / used to know
Sabíamos
They knew / used to know
Sabían
I could/would know
Sabría
You could/would know
Sabrías
He/She could/would know
Sabría
We could/would know
Sabríamos
They could/would know
Sabrían
I will know
Sabré
You will know
Sabrás
He/She will know
Sabrá
We will know
Sabremos