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 can't copper you can't copper he can't copper we can't copper you can't copper they can't copper	I can't be coppering you can't be coppering he can't be coppering we can't be coppering you can't be coppering they can't be coppering
Perfect	V-ing perfect
I can't have coppered you can't have coppered he can't have coppered we can't have coppered you can't have coppered they can't have coppered	I can't have been coppering you can't have been coppering he can't have been coppering we can't have been coppering you can't have been coppering they can't 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't I copper? can't you copper? can't he copper? can't we copper? can't you copper? can't they copper?	can't I be coppering? can't you be coppering? can't he be coppering? can't we be coppering? can't you be coppering? can't they be coppering?
Perfect	V-ing perfect
can't I have coppered? can't you have coppered? can't he have coppered? can't we have coppered? can't you have coppered? can't they have coppered?	can't I have been coppering? can't you have been coppering? can't he have been coppering? can't we have been coppering? can't you have been coppering? can't they have been coppering?