English verb conjugation
COULD CAMPAIGN

Regular verb: campaign - campaigned - campaigned

Affirmation

Simple form	V-ing form
I could campaign you could campaign she could campaign we could campaign you could campaign they could campaign	I could be campaigning you could be campaigning she could be campaigning we could be campaigning you could be campaigning they could be campaigning
Perfect	V-ing perfect
I could have campaigned you could have campaigned she could have campaigned we could have campaigned you could have campaigned they could have campaigned	I could have been campaigning you could have been campaigning she could have been campaigning we could have been campaigning you could have been campaigning they could have been campaigning

Negation

Simple form	V-ing form
I could not campaign you could not campaign she could not campaign we could not campaign you could not campaign they could not campaign	I could not be campaigning you could not be campaigning she could not be campaigning we could not be campaigning you could not be campaigning they could not be campaigning
Perfect	V-ing perfect
I could not have campaigned you could not have campaigned she could not have campaigned we could not have campaigned you could not have campaigned they could not have campaigned	I could not have been campaigning you could not have been campaigning she could not have been campaigning we could not have been campaigning you could not have been campaigning they could not have been campaigning

Interrogative form

Simple form	V-ing form
could I campaign? could you campaign? could she campaign? could we campaign? could you campaign? could they campaign?	could I be campaigning? could you be campaigning? could she be campaigning? could we be campaigning? could you be campaigning? could they be campaigning?
Perfect	V-ing perfect
could I have campaigned? could you have campaigned? could she have campaigned? could we have campaigned? could you have campaigned? could they have campaigned?	could I have been campaigning? could you have been campaigning? could she have been campaigning? could we have been campaigning? could you have been campaigning? could they have been campaigning?

Interro-negative form

Simple form	V-ing form
could I not campaign? could you not campaign? could she not campaign? could we not campaign? could you not campaign? could they not campaign?	could I not be campaigning? could you not be campaigning? could she not be campaigning? could we not be campaigning? could you not be campaigning? could they not be campaigning?
Perfect	V-ing perfect
could I not have campaigned? could you not have campaigned? could she not have campaigned? could we not have campaigned? could you not have campaigned? could they not have campaigned?	could I not have been campaigning? could you not have been campaigning? could she not have been campaigning? could we not have been campaigning? could you not have been campaigning? could they not have been campaigning?