could chamfer
Verbo regular: chamfer - chamfered- chamfered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could chamfer
you could chamfer
he could chamfer
we could chamfer
you could chamfer
they could chamfer 	I could be chamfering
you could be chamfering
he could be chamfering
we could be chamfering
you could be chamfering
they could be chamfering	I could have chamfered
you could have chamfered
he could have chamfered
we could have chamfered
you could have chamfered
they could have chamfered	I could have been chamfering
you could have been chamfering
he could have been chamfering
we could have been chamfering
you could have been chamfering
they could have been chamfering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not chamfer
you could not chamfer
he could not chamfer
we could not chamfer
you could not chamfer
they could not chamfer 	I could not be chamfering
you could not be chamfering
he could not be chamfering
we could not be chamfering
you could not be chamfering
they could not be chamfering	I could not have chamfered
you could not have chamfered
he could not have chamfered
we could not have chamfered
you could not have chamfered
they could not have chamfered	I could not have been chamfering
you could not have been chamfering
he could not have been chamfering
we could not have been chamfering
you could not have been chamfering
they could not have been chamfering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I chamfer?
could you chamfer?
could he chamfer?
could we chamfer?
could you chamfer?
could they chamfer? 	could I be chamfering?
could you be chamfering?
could he be chamfering?
could we be chamfering?
could you be chamfering?
could they be chamfering? 	could I have chamfered?
could you have chamfered?
could he have chamfered?
could we have chamfered?
could you have chamfered?
could they have chamfered? 	could I have been chamfering?
could you have been chamfering?
could he have been chamfering?
could we have been chamfering?
could you have been chamfering?
could they have been chamfering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not chamfer?
could you not chamfer?
could he not chamfer?
could we not chamfer?
could you not chamfer?
could they not chamfer? 	could I not be chamfering?
could you not be chamfering?
could he not be chamfering?
could we not be chamfering?
could you not be chamfering?
could they not be chamfering? 	could I not have chamfered?
could you not have chamfered?
could he not have chamfered?
could we not have chamfered?
could you not have chamfered?
could they not have chamfered? 	could I not have been chamfering?
could you not have been chamfering?
could he not have been chamfering?
could we not have been chamfering?
could you not have been chamfering?
could they not have been chamfering?