I could renew you could renew she could renew we could renew you could renew they could renew
V-ing form
I could be renewing you could be renewing she could be renewing we could be renewing you could be renewing they could be renewing
Perfect
I could have renewed you could have renewed she could have renewed we could have renewed you could have renewed they could have renewed
V-ing perfect
I could have been renewing you could have been renewing she could have been renewing we could have been renewing you could have been renewing they could have been renewing
Negation
Simple form
I could not renew you could not renew she could not renew we could not renew you could not renew they could not renew
V-ing form
I could not be renewing you could not be renewing she could not be renewing we could not be renewing you could not be renewing they could not be renewing
Perfect
I could not have renewed you could not have renewed she could not have renewed we could not have renewed you could not have renewed they could not have renewed
V-ing perfect
I could not have been renewing you could not have been renewing she could not have been renewing we could not have been renewing you could not have been renewing they could not have been renewing
Interrogative form
Simple form
could I renew? could you renew? could she renew? could we renew? could you renew? could they renew?
V-ing form
could I be renewing? could you be renewing? could she be renewing? could we be renewing? could you be renewing? could they be renewing?
Perfect
could I have renewed? could you have renewed? could she have renewed? could we have renewed? could you have renewed? could they have renewed?
V-ing perfect
could I have been renewing? could you have been renewing? could she have been renewing? could we have been renewing? could you have been renewing? could they have been renewing?
Interro-negative form
Simple form
could I not renew? could you not renew? could she not renew? could we not renew? could you not renew? could they not renew?
V-ing form
could I not be renewing? could you not be renewing? could she not be renewing? could we not be renewing? could you not be renewing? could they not be renewing?
Perfect
could I not have renewed? could you not have renewed? could she not have renewed? could we not have renewed? could you not have renewed? could they not have renewed?
V-ing perfect
could I not have been renewing? could you not have been renewing? could she not have been renewing? could we not have been renewing? could you not have been renewing? could they not have been renewing?