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 mustn't harbor you mustn't harbor he mustn't harbor we mustn't harbor you mustn't harbor they mustn't harbor	I mustn't be harboring you mustn't be harboring he mustn't be harboring we mustn't be harboring you mustn't be harboring they mustn't be harboring
Perfect	V-ing perfect
I mustn't have harbored you mustn't have harbored he mustn't have harbored we mustn't have harbored you mustn't have harbored they mustn't have harbored	I mustn't have been harboring you mustn't have been harboring he mustn't have been harboring we mustn't have been harboring you mustn't have been harboring they mustn't 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
mustn't I harbor? mustn't you harbor? mustn't he harbor? mustn't we harbor? mustn't you harbor? mustn't they harbor?	mustn't I be harboring? mustn't you be harboring? mustn't he be harboring? mustn't we be harboring? mustn't you be harboring? mustn't they be harboring?
Perfect	V-ing perfect
mustn't I have harbored? mustn't you have harbored? mustn't he have harbored? mustn't we have harbored? mustn't you have harbored? mustn't they have harbored?	mustn't I have been harboring? mustn't you have been harboring? mustn't he have been harboring? mustn't we have been harboring? mustn't you have been harboring? mustn't they have been harboring?