must chamfer
Regular verb: chamfer - chamfered- chamfered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must chamfer
you must chamfer
she must chamfer
we must chamfer
you must chamfer
they must chamfer 	I must be chamfering
you must be chamfering
she must be chamfering
we must be chamfering
you must be chamfering
they must be chamfering	I must have chamfered
you must have chamfered
she 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
she must have been chamfering
we must have been chamfering
you must have been chamfering
they must have been chamfering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not chamfer
you must not chamfer
she 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
she 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
she 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
she must not have been chamfering
we must not have been chamfering
you must not have been chamfering
they must not have been chamfering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I chamfer?
must you chamfer?
must she chamfer?
must we chamfer?
must you chamfer?
must they chamfer? 	must I be chamfering?
must you be chamfering?
must she be chamfering?
must we be chamfering?
must you be chamfering?
must they be chamfering? 	must I have chamfered?
must you have chamfered?
must she 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 she have been chamfering?
must we have been chamfering?
must you have been chamfering?
must they have been chamfering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not chamfer?
must you not chamfer?
must she 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 she 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 she 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 she not have been chamfering?
must we not have been chamfering?
must you not have been chamfering?
must they not have been chamfering?