English verb conjugation
COULD COPPER

Regular verb: copper - coppered - coppered

Affirmation

Simple form	V-ing form
I could copper you could copper he could copper we could copper you could copper they could copper	I could be coppering you could be coppering he 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 he 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 he 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 couldn't copper you couldn't copper he couldn't copper we couldn't copper you couldn't copper they couldn't copper	I couldn't be coppering you couldn't be coppering he couldn't be coppering we couldn't be coppering you couldn't be coppering they couldn't be coppering
Perfect	V-ing perfect
I couldn't have coppered you couldn't have coppered he couldn't have coppered we couldn't have coppered you couldn't have coppered they couldn't have coppered	I couldn't have been coppering you couldn't have been coppering he couldn't have been coppering we couldn't have been coppering you couldn't have been coppering they couldn't have been coppering

Interrogative form

Simple form	V-ing form
could I copper? could you copper? could he copper? could we copper? could you copper? could they copper?	could I be coppering? could you be coppering? could he 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 he 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 he 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
couldn't I copper? couldn't you copper? couldn't he copper? couldn't we copper? couldn't you copper? couldn't they copper?	couldn't I be coppering? couldn't you be coppering? couldn't he be coppering? couldn't we be coppering? couldn't you be coppering? couldn't they be coppering?
Perfect	V-ing perfect
couldn't I have coppered? couldn't you have coppered? couldn't he have coppered? couldn't we have coppered? couldn't you have coppered? couldn't they have coppered?	couldn't I have been coppering? couldn't you have been coppering? couldn't he have been coppering? couldn't we have been coppering? couldn't you have been coppering? couldn't they have been coppering?