English verb conjugation
MUST HARBOR

Regular verb: harbor - harbored - harbored

Affirmation

Simple form	V-ing form
I must harbor you must harbor she must harbor we must harbor you must harbor they must harbor	I must be harboring you must be harboring she 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 she 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 she 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 she 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 she 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 she 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 she 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 she harbor? must we harbor? must you harbor? must they harbor?	must I be harboring? must you be harboring? must she 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 she 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 she 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 she 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 she 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 she 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 she have been harboring? mustn't we have been harboring? mustn't you have been harboring? mustn't they have been harboring?