English verb conjugation
CAN COPPER

Regular verb: copper - coppered - coppered

Affirmation

Simple form	V-ing form
I can copper you can copper he can copper we can copper you can copper they can copper	I can be coppering you can be coppering he can be coppering we can be coppering you can be coppering they can be coppering
Perfect	V-ing perfect
I can have coppered you can have coppered he can have coppered we can have coppered you can have coppered they can have coppered	I can have been coppering you can have been coppering he can have been coppering we can have been coppering you can have been coppering they can have been coppering

Negation

Simple form	V-ing form
I cannot copper you cannot copper he cannot copper we cannot copper you cannot copper they cannot copper	I cannot be coppering you cannot be coppering he cannot be coppering we cannot be coppering you cannot be coppering they cannot be coppering
Perfect	V-ing perfect
I cannot have coppered you cannot have coppered he cannot have coppered we cannot have coppered you cannot have coppered they cannot have coppered	I cannot have been coppering you cannot have been coppering he cannot have been coppering we cannot have been coppering you cannot have been coppering they cannot have been coppering

Interrogative form

Simple form	V-ing form
can I copper? can you copper? can he copper? can we copper? can you copper? can they copper?	can I be coppering? can you be coppering? can he be coppering? can we be coppering? can you be coppering? can they be coppering?
Perfect	V-ing perfect
can I have coppered? can you have coppered? can he have coppered? can we have coppered? can you have coppered? can they have coppered?	can I have been coppering? can you have been coppering? can he have been coppering? can we have been coppering? can you have been coppering? can they have been coppering?

Interro-negative form

Simple form	V-ing form
can I not copper? can you not copper? can he not copper? can we not copper? can you not copper? can they not copper?	can I not be coppering? can you not be coppering? can he not be coppering? can we not be coppering? can you not be coppering? can they not be coppering?
Perfect	V-ing perfect
can I not have coppered? can you not have coppered? can he not have coppered? can we not have coppered? can you not have coppered? can they not have coppered?	can I not have been coppering? can you not have been coppering? can he not have been coppering? can we not have been coppering? can you not have been coppering? can they not have been coppering?