English verb conjugation
COULD CURVET

Regular verb: curvet - curveted - curveted

Affirmation

Simple form	V-ing form
I could curvet you could curvet he could curvet we could curvet you could curvet they could curvet	I could be curveting you could be curveting he could be curveting we could be curveting you could be curveting they could be curveting
Perfect	V-ing perfect
I could have curveted you could have curveted he could have curveted we could have curveted you could have curveted they could have curveted	I could have been curveting you could have been curveting he could have been curveting we could have been curveting you could have been curveting they could have been curveting

Negation

Simple form	V-ing form
I could not curvet you could not curvet he could not curvet we could not curvet you could not curvet they could not curvet	I could not be curveting you could not be curveting he could not be curveting we could not be curveting you could not be curveting they could not be curveting
Perfect	V-ing perfect
I could not have curveted you could not have curveted he could not have curveted we could not have curveted you could not have curveted they could not have curveted	I could not have been curveting you could not have been curveting he could not have been curveting we could not have been curveting you could not have been curveting they could not have been curveting

Interrogative form

Simple form	V-ing form
could I curvet? could you curvet? could he curvet? could we curvet? could you curvet? could they curvet?	could I be curveting? could you be curveting? could he be curveting? could we be curveting? could you be curveting? could they be curveting?
Perfect	V-ing perfect
could I have curveted? could you have curveted? could he have curveted? could we have curveted? could you have curveted? could they have curveted?	could I have been curveting? could you have been curveting? could he have been curveting? could we have been curveting? could you have been curveting? could they have been curveting?

Interro-negative form

Simple form	V-ing form
could I not curvet? could you not curvet? could he not curvet? could we not curvet? could you not curvet? could they not curvet?	could I not be curveting? could you not be curveting? could he not be curveting? could we not be curveting? could you not be curveting? could they not be curveting?
Perfect	V-ing perfect
could I not have curveted? could you not have curveted? could he not have curveted? could we not have curveted? could you not have curveted? could they not have curveted?	could I not have been curveting? could you not have been curveting? could he not have been curveting? could we not have been curveting? could you not have been curveting? could they not have been curveting?