must vat
Verbe régulier : vat - vatted- vatted

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must vat
you must vat
he must vat
we must vat
you must vat
they must vat 	I must be vatting
you must be vatting
he must be vatting
we must be vatting
you must be vatting
they must be vatting	I must have vatted
you must have vatted
he must have vatted
we must have vatted
you must have vatted
they must have vatted	I must have been vatting
you must have been vatting
he must have been vatting
we must have been vatting
you must have been vatting
they must have been vatting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't vat
you mustn't vat
he mustn't vat
we mustn't vat
you mustn't vat
they mustn't vat 	I mustn't be vatting
you mustn't be vatting
he mustn't be vatting
we mustn't be vatting
you mustn't be vatting
they mustn't be vatting	I mustn't have vatted
you mustn't have vatted
he mustn't have vatted
we mustn't have vatted
you mustn't have vatted
they mustn't have vatted	I mustn't have been vatting
you mustn't have been vatting
he mustn't have been vatting
we mustn't have been vatting
you mustn't have been vatting
they mustn't have been vatting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I vat?
must you vat?
must he vat?
must we vat?
must you vat?
must they vat? 	must I be vatting?
must you be vatting?
must he be vatting?
must we be vatting?
must you be vatting?
must they be vatting? 	must I have vatted?
must you have vatted?
must he have vatted?
must we have vatted?
must you have vatted?
must they have vatted? 	must I have been vatting?
must you have been vatting?
must he have been vatting?
must we have been vatting?
must you have been vatting?
must they have been vatting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I vat?
mustn't you vat?
mustn't he vat?
mustn't we vat?
mustn't you vat?
mustn't they vat? 	mustn't I be vatting?
mustn't you be vatting?
mustn't he be vatting?
mustn't we be vatting?
mustn't you be vatting?
mustn't they be vatting? 	mustn't I have vatted?
mustn't you have vatted?
mustn't he have vatted?
mustn't we have vatted?
mustn't you have vatted?
mustn't they have vatted? 	mustn't I have been vatting?
mustn't you have been vatting?
mustn't he have been vatting?
mustn't we have been vatting?
mustn't you have been vatting?
mustn't they have been vatting?