English verb conjugation
CAN HARBOR

Regular verb: harbor - harbored - harbored

Affirmation

Simple form	V-ing form
I can harbor you can harbor he can harbor we can harbor you can harbor they can harbor	I can be harboring you can be harboring he can be harboring we can be harboring you can be harboring they can be harboring
Perfect	V-ing perfect
I can have harbored you can have harbored he can have harbored we can have harbored you can have harbored they can have harbored	I can have been harboring you can have been harboring he can have been harboring we can have been harboring you can have been harboring they can have been harboring

Negation

Simple form	V-ing form
I can't harbor you can't harbor he can't harbor we can't harbor you can't harbor they can't harbor	I can't be harboring you can't be harboring he can't be harboring we can't be harboring you can't be harboring they can't be harboring
Perfect	V-ing perfect
I can't have harbored you can't have harbored he can't have harbored we can't have harbored you can't have harbored they can't have harbored	I can't have been harboring you can't have been harboring he can't have been harboring we can't have been harboring you can't have been harboring they can't have been harboring

Interrogative form

Simple form	V-ing form
can I harbor? can you harbor? can he harbor? can we harbor? can you harbor? can they harbor?	can I be harboring? can you be harboring? can he be harboring? can we be harboring? can you be harboring? can they be harboring?
Perfect	V-ing perfect
can I have harbored? can you have harbored? can he have harbored? can we have harbored? can you have harbored? can they have harbored?	can I have been harboring? can you have been harboring? can he have been harboring? can we have been harboring? can you have been harboring? can they have been harboring?

Interro-negative form

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