must harbor
Verbo regular: harbor - harbored- harbored

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must harbor
you must harbor
he must harbor
we must harbor
you must harbor
they must harbor 	I must be harboring
you must be harboring
he must be harboring
we must be harboring
you must be harboring
they must be harboring	I must have harbored
you must have harbored
he must have harbored
we must have harbored
you must have harbored
they must have harbored	I must have been harboring
you must have been harboring
he must have been harboring
we must have been harboring
you must have been harboring
they must have been harboring	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not harbor
you must not harbor
he must not harbor
we must not harbor
you must not harbor
they must not harbor 	I must not be harboring
you must not be harboring
he must not be harboring
we must not be harboring
you must not be harboring
they must not be harboring	I must not have harbored
you must not have harbored
he must not have harbored
we must not have harbored
you must not have harbored
they must not have harbored	I must not have been harboring
you must not have been harboring
he must not have been harboring
we must not have been harboring
you must not have been harboring
they must not have been harboring	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I harbor?
must you harbor?
must he harbor?
must we harbor?
must you harbor?
must they harbor? 	must I be harboring?
must you be harboring?
must he be harboring?
must we be harboring?
must you be harboring?
must they be harboring? 	must I have harbored?
must you have harbored?
must he have harbored?
must we have harbored?
must you have harbored?
must they have harbored? 	must I have been harboring?
must you have been harboring?
must he have been harboring?
must we have been harboring?
must you have been harboring?
must they have been harboring? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not harbor?
must you not harbor?
must he not harbor?
must we not harbor?
must you not harbor?
must they not harbor? 	must I not be harboring?
must you not be harboring?
must he not be harboring?
must we not be harboring?
must you not be harboring?
must they not be harboring? 	must I not have harbored?
must you not have harbored?
must he not have harbored?
must we not have harbored?
must you not have harbored?
must they not have harbored? 	must I not have been harboring?
must you not have been harboring?
must he not have been harboring?
must we not have been harboring?
must you not have been harboring?
must they not have been harboring?