English verb conjugation
COULD CIRCLE

Regular verb: circle - circled - circled

Affirmation

Simple form	V-ing form
I could circle you could circle she could circle we could circle you could circle they could circle	I could be circling you could be circling she could be circling we could be circling you could be circling they could be circling
Perfect	V-ing perfect
I could have circled you could have circled she could have circled we could have circled you could have circled they could have circled	I could have been circling you could have been circling she could have been circling we could have been circling you could have been circling they could have been circling

Negation

Simple form	V-ing form
I could not circle you could not circle she could not circle we could not circle you could not circle they could not circle	I could not be circling you could not be circling she could not be circling we could not be circling you could not be circling they could not be circling
Perfect	V-ing perfect
I could not have circled you could not have circled she could not have circled we could not have circled you could not have circled they could not have circled	I could not have been circling you could not have been circling she could not have been circling we could not have been circling you could not have been circling they could not have been circling

Interrogative form

Simple form	V-ing form
could I circle? could you circle? could she circle? could we circle? could you circle? could they circle?	could I be circling? could you be circling? could she be circling? could we be circling? could you be circling? could they be circling?
Perfect	V-ing perfect
could I have circled? could you have circled? could she have circled? could we have circled? could you have circled? could they have circled?	could I have been circling? could you have been circling? could she have been circling? could we have been circling? could you have been circling? could they have been circling?

Interro-negative form

Simple form	V-ing form
could I not circle? could you not circle? could she not circle? could we not circle? could you not circle? could they not circle?	could I not be circling? could you not be circling? could she not be circling? could we not be circling? could you not be circling? could they not be circling?
Perfect	V-ing perfect
could I not have circled? could you not have circled? could she not have circled? could we not have circled? could you not have circled? could they not have circled?	could I not have been circling? could you not have been circling? could she not have been circling? could we not have been circling? could you not have been circling? could they not have been circling?