Koe/Could

Ik koe	I could
Dû koest	You could
Hy/Sy/It koe	He/She/It could
Wy koene	We could
Jo koene	You could
Jim koene	You could
Sy koene	They could

We could predict the weather.
You could’ve warned me.
They could not believe it.
I could not tell her.
You (pl.) could not prevent it.
She could not do it.