could copper
Regular verb: copper - coppered- coppered

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