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 must not circulate
you must not circulate
he must not circulate
we must not circulate
you must not circulate
they must not circulate 	I must not be circulating
you must not be circulating
he must not be circulating
we must not be circulating
you must not be circulating
they must not be circulating	I must not have circulated
you must not have circulated
he must not have circulated
we must not have circulated
you must not have circulated
they must not have circulated	I must not have been circulating
you must not have been circulating
he must not have been circulating
we must not have been circulating
you must not have been circulating
they must not 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 	
must I not circulate?
must you not circulate?
must he not circulate?
must we not circulate?
must you not circulate?
must they not circulate? 	must I not be circulating?
must you not be circulating?
must he not be circulating?
must we not be circulating?
must you not be circulating?
must they not be circulating? 	must I not have circulated?
must you not have circulated?
must he not have circulated?
must we not have circulated?
must you not have circulated?
must they not have circulated? 	must I not have been circulating?
must you not have been circulating?
must he not have been circulating?
must we not have been circulating?
must you not have been circulating?
must they not have been circulating?