I could advocate you could advocate she could advocate we could advocate you could advocate they could advocate
V-ing form
I could be advocating you could be advocating she could be advocating we could be advocating you could be advocating they could be advocating
Perfect
I could have advocated you could have advocated she could have advocated we could have advocated you could have advocated they could have advocated
V-ing perfect
I could have been advocating you could have been advocating she could have been advocating we could have been advocating you could have been advocating they could have been advocating
Negation
Simple form
I could not advocate you could not advocate she could not advocate we could not advocate you could not advocate they could not advocate
V-ing form
I could not be advocating you could not be advocating she could not be advocating we could not be advocating you could not be advocating they could not be advocating
Perfect
I could not have advocated you could not have advocated she could not have advocated we could not have advocated you could not have advocated they could not have advocated
V-ing perfect
I could not have been advocating you could not have been advocating she could not have been advocating we could not have been advocating you could not have been advocating they could not have been advocating
Interrogative form
Simple form
could I advocate? could you advocate? could she advocate? could we advocate? could you advocate? could they advocate?
V-ing form
could I be advocating? could you be advocating? could she be advocating? could we be advocating? could you be advocating? could they be advocating?
Perfect
could I have advocated? could you have advocated? could she have advocated? could we have advocated? could you have advocated? could they have advocated?
V-ing perfect
could I have been advocating? could you have been advocating? could she have been advocating? could we have been advocating? could you have been advocating? could they have been advocating?
Interro-negative form
Simple form
could I not advocate? could you not advocate? could she not advocate? could we not advocate? could you not advocate? could they not advocate?
V-ing form
could I not be advocating? could you not be advocating? could she not be advocating? could we not be advocating? could you not be advocating? could they not be advocating?
Perfect
could I not have advocated? could you not have advocated? could she not have advocated? could we not have advocated? could you not have advocated? could they not have advocated?
V-ing perfect
could I not have been advocating? could you not have been advocating? could she not have been advocating? could we not have been advocating? could you not have been advocating? could they not have been advocating?