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
she must gulf
we must gulf
you must gulf
they must gulf 	I must be gulfing
you must be gulfing
she must be gulfing
we must be gulfing
you must be gulfing
they must be gulfing	I must have gulfed
you must have gulfed
she 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
she 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 must not gulf
you must not gulf
she must not gulf
we must not gulf
you must not gulf
they must not gulf 	I must not be gulfing
you must not be gulfing
she must not be gulfing
we must not be gulfing
you must not be gulfing
they must not be gulfing	I must not have gulfed
you must not have gulfed
she must not have gulfed
we must not have gulfed
you must not have gulfed
they must not have gulfed	I must not have been gulfing
you must not have been gulfing
she must not have been gulfing
we must not have been gulfing
you must not have been gulfing
they must not have been gulfing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I gulf?
must you gulf?
must she gulf?
must we gulf?
must you gulf?
must they gulf? 	must I be gulfing?
must you be gulfing?
must she be gulfing?
must we be gulfing?
must you be gulfing?
must they be gulfing? 	must I have gulfed?
must you have gulfed?
must she 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 she 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 	
must I not gulf?
must you not gulf?
must she not gulf?
must we not gulf?
must you not gulf?
must they not gulf? 	must I not be gulfing?
must you not be gulfing?
must she not be gulfing?
must we not be gulfing?
must you not be gulfing?
must they not be gulfing? 	must I not have gulfed?
must you not have gulfed?
must she not have gulfed?
must we not have gulfed?
must you not have gulfed?
must they not have gulfed? 	must I not have been gulfing?
must you not have been gulfing?
must she not have been gulfing?
must we not have been gulfing?
must you not have been gulfing?
must they not have been gulfing?