must persist
Verbo regular: persist - persisted- persisted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must persist
you must persist
he must persist
we must persist
you must persist
they must persist 	I must be persisting
you must be persisting
he must be persisting
we must be persisting
you must be persisting
they must be persisting	I must have persisted
you must have persisted
he must have persisted
we must have persisted
you must have persisted
they must have persisted	I must have been persisting
you must have been persisting
he must have been persisting
we must have been persisting
you must have been persisting
they must have been persisting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not persist
you must not persist
he must not persist
we must not persist
you must not persist
they must not persist 	I must not be persisting
you must not be persisting
he must not be persisting
we must not be persisting
you must not be persisting
they must not be persisting	I must not have persisted
you must not have persisted
he must not have persisted
we must not have persisted
you must not have persisted
they must not have persisted	I must not have been persisting
you must not have been persisting
he must not have been persisting
we must not have been persisting
you must not have been persisting
they must not have been persisting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I persist?
must you persist?
must he persist?
must we persist?
must you persist?
must they persist? 	must I be persisting?
must you be persisting?
must he be persisting?
must we be persisting?
must you be persisting?
must they be persisting? 	must I have persisted?
must you have persisted?
must he have persisted?
must we have persisted?
must you have persisted?
must they have persisted? 	must I have been persisting?
must you have been persisting?
must he have been persisting?
must we have been persisting?
must you have been persisting?
must they have been persisting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not persist?
must you not persist?
must he not persist?
must we not persist?
must you not persist?
must they not persist? 	must I not be persisting?
must you not be persisting?
must he not be persisting?
must we not be persisting?
must you not be persisting?
must they not be persisting? 	must I not have persisted?
must you not have persisted?
must he not have persisted?
must we not have persisted?
must you not have persisted?
must they not have persisted? 	must I not have been persisting?
must you not have been persisting?
must he not have been persisting?
must we not have been persisting?
must you not have been persisting?
must they not have been persisting?