English verb conjugation
COULD COPPER

Regular verb: copper - coppered - coppered

Affirmation

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

Negation

Simple form	V-ing form
I could not copper you could not copper she could not copper we could not copper you could not copper they could not copper	I could not be coppering you could not be coppering she could not be coppering we could not be coppering you could not be coppering they could not be coppering
Perfect	V-ing perfect
I could not have coppered you could not have coppered she could not have coppered we could not have coppered you could not have coppered they could not have coppered	I could not have been coppering you could not have been coppering she could not have been coppering we could not have been coppering you could not have been coppering they could not have been coppering

Interrogative form

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

Interro-negative form

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