must gulf
Verbe régulier : gulf - gulfed- gulfed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must gulf
you must gulf
he must gulf
we must gulf
you must gulf
they must gulf 	I must be gulfing
you must be gulfing
he must be gulfing
we must be gulfing
you must be gulfing
they must be gulfing	I must have gulfed
you must have gulfed
he must have gulfed
we must have gulfed
you must have gulfed
they must have gulfed	I must have been gulfing
you must have been gulfing
he must have been gulfing
we must have been gulfing
you must have been gulfing
they must have been gulfing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't gulf
you mustn't gulf
he mustn't gulf
we mustn't gulf
you mustn't gulf
they mustn't gulf 	I mustn't be gulfing
you mustn't be gulfing
he mustn't be gulfing
we mustn't be gulfing
you mustn't be gulfing
they mustn't be gulfing	I mustn't have gulfed
you mustn't have gulfed
he mustn't have gulfed
we mustn't have gulfed
you mustn't have gulfed
they mustn't have gulfed	I mustn't have been gulfing
you mustn't have been gulfing
he mustn't have been gulfing
we mustn't have been gulfing
you mustn't have been gulfing
they mustn't have been gulfing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I gulf?
must you gulf?
must he gulf?
must we gulf?
must you gulf?
must they gulf? 	must I be gulfing?
must you be gulfing?
must he be gulfing?
must we be gulfing?
must you be gulfing?
must they be gulfing? 	must I have gulfed?
must you have gulfed?
must he have gulfed?
must we have gulfed?
must you have gulfed?
must they have gulfed? 	must I have been gulfing?
must you have been gulfing?
must he have been gulfing?
must we have been gulfing?
must you have been gulfing?
must they have been gulfing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I gulf?
mustn't you gulf?
mustn't he gulf?
mustn't we gulf?
mustn't you gulf?
mustn't they gulf? 	mustn't I be gulfing?
mustn't you be gulfing?
mustn't he be gulfing?
mustn't we be gulfing?
mustn't you be gulfing?
mustn't they be gulfing? 	mustn't I have gulfed?
mustn't you have gulfed?
mustn't he have gulfed?
mustn't we have gulfed?
mustn't you have gulfed?
mustn't they have gulfed? 	mustn't I have been gulfing?
mustn't you have been gulfing?
mustn't he have been gulfing?
mustn't we have been gulfing?
mustn't you have been gulfing?
mustn't they have been gulfing?