English verb conjugation
CAN PAPER

Regular verb: paper - papered - papered

Affirmation

Simple form	V-ing form
I can paper you can paper he can paper we can paper you can paper they can paper	I can be papering you can be papering he can be papering we can be papering you can be papering they can be papering
Perfect	V-ing perfect
I can have papered you can have papered he can have papered we can have papered you can have papered they can have papered	I can have been papering you can have been papering he can have been papering we can have been papering you can have been papering they can have been papering

Negation

Simple form	V-ing form
I cannot paper you cannot paper he cannot paper we cannot paper you cannot paper they cannot paper	I cannot be papering you cannot be papering he cannot be papering we cannot be papering you cannot be papering they cannot be papering
Perfect	V-ing perfect
I cannot have papered you cannot have papered he cannot have papered we cannot have papered you cannot have papered they cannot have papered	I cannot have been papering you cannot have been papering he cannot have been papering we cannot have been papering you cannot have been papering they cannot have been papering

Interrogative form

Simple form	V-ing form
can I paper? can you paper? can he paper? can we paper? can you paper? can they paper?	can I be papering? can you be papering? can he be papering? can we be papering? can you be papering? can they be papering?
Perfect	V-ing perfect
can I have papered? can you have papered? can he have papered? can we have papered? can you have papered? can they have papered?	can I have been papering? can you have been papering? can he have been papering? can we have been papering? can you have been papering? can they have been papering?

Interro-negative form

Simple form	V-ing form
can I not paper? can you not paper? can he not paper? can we not paper? can you not paper? can they not paper?	can I not be papering? can you not be papering? can he not be papering? can we not be papering? can you not be papering? can they not be papering?
Perfect	V-ing perfect
can I not have papered? can you not have papered? can he not have papered? can we not have papered? can you not have papered? can they not have papered?	can I not have been papering? can you not have been papering? can he not have been papering? can we not have been papering? can you not have been papering? can they not have been papering?