English verb conjugation
MUST HARBOR

Regular verb: harbor - harbored - harbored

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?