must chamfer
Verbo regular: chamfer - chamfered- chamfered

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

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

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

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