must gulf
Verbo regular: gulf - gulfed- gulfed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not gulf
you must not gulf
he 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
he 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
he 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
he must not have been gulfing
we must not have been gulfing
you must not have been gulfing
they must not have been gulfing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not gulf?
must you not gulf?
must he 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 he 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 he 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 he not have been gulfing?
must we not have been gulfing?
must you not have been gulfing?
must they not have been gulfing?