must chafe
Regular verb: chafe - chafed- chafed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must chafe
you must chafe
he must chafe
we must chafe
you must chafe
they must chafe 	I must be chafing
you must be chafing
he must be chafing
we must be chafing
you must be chafing
they must be chafing	I must have chafed
you must have chafed
he must have chafed
we must have chafed
you must have chafed
they must have chafed	I must have been chafing
you must have been chafing
he must have been chafing
we must have been chafing
you must have been chafing
they must have been chafing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't chafe
you mustn't chafe
he mustn't chafe
we mustn't chafe
you mustn't chafe
they mustn't chafe 	I mustn't be chafing
you mustn't be chafing
he mustn't be chafing
we mustn't be chafing
you mustn't be chafing
they mustn't be chafing	I mustn't have chafed
you mustn't have chafed
he mustn't have chafed
we mustn't have chafed
you mustn't have chafed
they mustn't have chafed	I mustn't have been chafing
you mustn't have been chafing
he mustn't have been chafing
we mustn't have been chafing
you mustn't have been chafing
they mustn't have been chafing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I chafe?
must you chafe?
must he chafe?
must we chafe?
must you chafe?
must they chafe? 	must I be chafing?
must you be chafing?
must he be chafing?
must we be chafing?
must you be chafing?
must they be chafing? 	must I have chafed?
must you have chafed?
must he have chafed?
must we have chafed?
must you have chafed?
must they have chafed? 	must I have been chafing?
must you have been chafing?
must he have been chafing?
must we have been chafing?
must you have been chafing?
must they have been chafing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I chafe?
mustn't you chafe?
mustn't he chafe?
mustn't we chafe?
mustn't you chafe?
mustn't they chafe? 	mustn't I be chafing?
mustn't you be chafing?
mustn't he be chafing?
mustn't we be chafing?
mustn't you be chafing?
mustn't they be chafing? 	mustn't I have chafed?
mustn't you have chafed?
mustn't he have chafed?
mustn't we have chafed?
mustn't you have chafed?
mustn't they have chafed? 	mustn't I have been chafing?
mustn't you have been chafing?
mustn't he have been chafing?
mustn't we have been chafing?
mustn't you have been chafing?
mustn't they have been chafing?