must chaffer
Verbo regular: chaffer - chaffered- chaffered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must chaffer
you must chaffer
he must chaffer
we must chaffer
you must chaffer
they must chaffer 	I must be chaffering
you must be chaffering
he must be chaffering
we must be chaffering
you must be chaffering
they must be chaffering	I must have chaffered
you must have chaffered
he must have chaffered
we must have chaffered
you must have chaffered
they must have chaffered	I must have been chaffering
you must have been chaffering
he must have been chaffering
we must have been chaffering
you must have been chaffering
they must have been chaffering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not chaffer
you must not chaffer
he must not chaffer
we must not chaffer
you must not chaffer
they must not chaffer 	I must not be chaffering
you must not be chaffering
he must not be chaffering
we must not be chaffering
you must not be chaffering
they must not be chaffering	I must not have chaffered
you must not have chaffered
he must not have chaffered
we must not have chaffered
you must not have chaffered
they must not have chaffered	I must not have been chaffering
you must not have been chaffering
he must not have been chaffering
we must not have been chaffering
you must not have been chaffering
they must not have been chaffering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I chaffer?
must you chaffer?
must he chaffer?
must we chaffer?
must you chaffer?
must they chaffer? 	must I be chaffering?
must you be chaffering?
must he be chaffering?
must we be chaffering?
must you be chaffering?
must they be chaffering? 	must I have chaffered?
must you have chaffered?
must he have chaffered?
must we have chaffered?
must you have chaffered?
must they have chaffered? 	must I have been chaffering?
must you have been chaffering?
must he have been chaffering?
must we have been chaffering?
must you have been chaffering?
must they have been chaffering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not chaffer?
must you not chaffer?
must he not chaffer?
must we not chaffer?
must you not chaffer?
must they not chaffer? 	must I not be chaffering?
must you not be chaffering?
must he not be chaffering?
must we not be chaffering?
must you not be chaffering?
must they not be chaffering? 	must I not have chaffered?
must you not have chaffered?
must he not have chaffered?
must we not have chaffered?
must you not have chaffered?
must they not have chaffered? 	must I not have been chaffering?
must you not have been chaffering?
must he not have been chaffering?
must we not have been chaffering?
must you not have been chaffering?
must they not have been chaffering?