English verb conjugation
COULD CONTUSE

Regular verb: contuse - contused - contused

Affirmation

Simple form	V-ing form
I could contuse you could contuse she could contuse we could contuse you could contuse they could contuse	I could be contusing you could be contusing she could be contusing we could be contusing you could be contusing they could be contusing
Perfect	V-ing perfect
I could have contused you could have contused she could have contused we could have contused you could have contused they could have contused	I could have been contusing you could have been contusing she could have been contusing we could have been contusing you could have been contusing they could have been contusing

Negation

Simple form	V-ing form
I could not contuse you could not contuse she could not contuse we could not contuse you could not contuse they could not contuse	I could not be contusing you could not be contusing she could not be contusing we could not be contusing you could not be contusing they could not be contusing
Perfect	V-ing perfect
I could not have contused you could not have contused she could not have contused we could not have contused you could not have contused they could not have contused	I could not have been contusing you could not have been contusing she could not have been contusing we could not have been contusing you could not have been contusing they could not have been contusing

Interrogative form

Simple form	V-ing form
could I contuse? could you contuse? could she contuse? could we contuse? could you contuse? could they contuse?	could I be contusing? could you be contusing? could she be contusing? could we be contusing? could you be contusing? could they be contusing?
Perfect	V-ing perfect
could I have contused? could you have contused? could she have contused? could we have contused? could you have contused? could they have contused?	could I have been contusing? could you have been contusing? could she have been contusing? could we have been contusing? could you have been contusing? could they have been contusing?

Interro-negative form

Simple form	V-ing form
could I not contuse? could you not contuse? could she not contuse? could we not contuse? could you not contuse? could they not contuse?	could I not be contusing? could you not be contusing? could she not be contusing? could we not be contusing? could you not be contusing? could they not be contusing?
Perfect	V-ing perfect
could I not have contused? could you not have contused? could she not have contused? could we not have contused? could you not have contused? could they not have contused?	could I not have been contusing? could you not have been contusing? could she not have been contusing? could we not have been contusing? could you not have been contusing? could they not have been contusing?