must chaffer
Regular verb: chaffer - chaffered- chaffered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must chaffer
you must chaffer
she must chaffer
we must chaffer
you must chaffer
they must chaffer 	I must be chaffering
you must be chaffering
she must be chaffering
we must be chaffering
you must be chaffering
they must be chaffering	I must have chaffered
you must have chaffered
she 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
she must have been chaffering
we must have been chaffering
you must have been chaffering
they must have been chaffering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't chaffer
you mustn't chaffer
she mustn't chaffer
we mustn't chaffer
you mustn't chaffer
they mustn't chaffer 	I mustn't be chaffering
you mustn't be chaffering
she mustn't be chaffering
we mustn't be chaffering
you mustn't be chaffering
they mustn't be chaffering	I mustn't have chaffered
you mustn't have chaffered
she mustn't have chaffered
we mustn't have chaffered
you mustn't have chaffered
they mustn't have chaffered	I mustn't have been chaffering
you mustn't have been chaffering
she mustn't have been chaffering
we mustn't have been chaffering
you mustn't have been chaffering
they mustn't have been chaffering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I chaffer?
must you chaffer?
must she chaffer?
must we chaffer?
must you chaffer?
must they chaffer? 	must I be chaffering?
must you be chaffering?
must she be chaffering?
must we be chaffering?
must you be chaffering?
must they be chaffering? 	must I have chaffered?
must you have chaffered?
must she 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 she have been chaffering?
must we have been chaffering?
must you have been chaffering?
must they have been chaffering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I chaffer?
mustn't you chaffer?
mustn't she chaffer?
mustn't we chaffer?
mustn't you chaffer?
mustn't they chaffer? 	mustn't I be chaffering?
mustn't you be chaffering?
mustn't she be chaffering?
mustn't we be chaffering?
mustn't you be chaffering?
mustn't they be chaffering? 	mustn't I have chaffered?
mustn't you have chaffered?
mustn't she have chaffered?
mustn't we have chaffered?
mustn't you have chaffered?
mustn't they have chaffered? 	mustn't I have been chaffering?
mustn't you have been chaffering?
mustn't she have been chaffering?
mustn't we have been chaffering?
mustn't you have been chaffering?
mustn't they have been chaffering?