English verb conjugation
COULD BAN

Regular verb: ban - banned - banned

Affirmation

Simple form	V-ing form
I could ban you could ban he could ban we could ban you could ban they could ban	I could be banning you could be banning he could be banning we could be banning you could be banning they could be banning
Perfect	V-ing perfect
I could have banned you could have banned he could have banned we could have banned you could have banned they could have banned	I could have been banning you could have been banning he could have been banning we could have been banning you could have been banning they could have been banning

Negation

Simple form	V-ing form
I could not ban you could not ban he could not ban we could not ban you could not ban they could not ban	I could not be banning you could not be banning he could not be banning we could not be banning you could not be banning they could not be banning
Perfect	V-ing perfect
I could not have banned you could not have banned he could not have banned we could not have banned you could not have banned they could not have banned	I could not have been banning you could not have been banning he could not have been banning we could not have been banning you could not have been banning they could not have been banning

Interrogative form

Simple form	V-ing form
could I ban? could you ban? could he ban? could we ban? could you ban? could they ban?	could I be banning? could you be banning? could he be banning? could we be banning? could you be banning? could they be banning?
Perfect	V-ing perfect
could I have banned? could you have banned? could he have banned? could we have banned? could you have banned? could they have banned?	could I have been banning? could you have been banning? could he have been banning? could we have been banning? could you have been banning? could they have been banning?

Interro-negative form

Simple form	V-ing form
could I not ban? could you not ban? could he not ban? could we not ban? could you not ban? could they not ban?	could I not be banning? could you not be banning? could he not be banning? could we not be banning? could you not be banning? could they not be banning?
Perfect	V-ing perfect
could I not have banned? could you not have banned? could he not have banned? could we not have banned? could you not have banned? could they not have banned?	could I not have been banning? could you not have been banning? could he not have been banning? could we not have been banning? could you not have been banning? could they not have been banning?