must chafe
Verbe régulier : chafe - chafed- chafed
Traduction française : frictionner - s'user (par frottement) 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must chafe
you must chafe
she must chafe
we must chafe
you must chafe
they must chafe 	I must be chafing
you must be chafing
she must be chafing
we must be chafing
you must be chafing
they must be chafing	I must have chafed
you must have chafed
she 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
she must have been chafing
we must have been chafing
you must have been chafing
they must have been chafing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't chafe
you mustn't chafe
she 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
she 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
she 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
she mustn't have been chafing
we mustn't have been chafing
you mustn't have been chafing
they mustn't have been chafing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I chafe?
must you chafe?
must she chafe?
must we chafe?
must you chafe?
must they chafe? 	must I be chafing?
must you be chafing?
must she be chafing?
must we be chafing?
must you be chafing?
must they be chafing? 	must I have chafed?
must you have chafed?
must she 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 she have been chafing?
must we have been chafing?
must you have been chafing?
must they have been chafing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I chafe?
mustn't you chafe?
mustn't she 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 she 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 she 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 she have been chafing?
mustn't we have been chafing?
mustn't you have been chafing?
mustn't they have been chafing?