must circulate
Verbo regular: circulate - circulated- circulated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must circulate
you must circulate
he must circulate
we must circulate
you must circulate
they must circulate 	I must be circulating
you must be circulating
he must be circulating
we must be circulating
you must be circulating
they must be circulating	I must have circulated
you must have circulated
he must have circulated
we must have circulated
you must have circulated
they must have circulated	I must have been circulating
you must have been circulating
he must have been circulating
we must have been circulating
you must have been circulating
they must have been circulating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't circulate
you mustn't circulate
he mustn't circulate
we mustn't circulate
you mustn't circulate
they mustn't circulate 	I mustn't be circulating
you mustn't be circulating
he mustn't be circulating
we mustn't be circulating
you mustn't be circulating
they mustn't be circulating	I mustn't have circulated
you mustn't have circulated
he mustn't have circulated
we mustn't have circulated
you mustn't have circulated
they mustn't have circulated	I mustn't have been circulating
you mustn't have been circulating
he mustn't have been circulating
we mustn't have been circulating
you mustn't have been circulating
they mustn't have been circulating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I circulate?
must you circulate?
must he circulate?
must we circulate?
must you circulate?
must they circulate? 	must I be circulating?
must you be circulating?
must he be circulating?
must we be circulating?
must you be circulating?
must they be circulating? 	must I have circulated?
must you have circulated?
must he have circulated?
must we have circulated?
must you have circulated?
must they have circulated? 	must I have been circulating?
must you have been circulating?
must he have been circulating?
must we have been circulating?
must you have been circulating?
must they have been circulating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I circulate?
mustn't you circulate?
mustn't he circulate?
mustn't we circulate?
mustn't you circulate?
mustn't they circulate? 	mustn't I be circulating?
mustn't you be circulating?
mustn't he be circulating?
mustn't we be circulating?
mustn't you be circulating?
mustn't they be circulating? 	mustn't I have circulated?
mustn't you have circulated?
mustn't he have circulated?
mustn't we have circulated?
mustn't you have circulated?
mustn't they have circulated? 	mustn't I have been circulating?
mustn't you have been circulating?
mustn't he have been circulating?
mustn't we have been circulating?
mustn't you have been circulating?
mustn't they have been circulating?