English verb conjugation
MUST REBUILD

Irregular verb: rebuild - rebuilt - rebuilt

Affirmation

Simple form	V-ing form
I must rebuild you must rebuild he must rebuild we must rebuild you must rebuild they must rebuild	I must be rebuilding you must be rebuilding he must be rebuilding we must be rebuilding you must be rebuilding they must be rebuilding
Perfect	V-ing perfect
I must have rebuilt you must have rebuilt he must have rebuilt we must have rebuilt you must have rebuilt they must have rebuilt	I must have been rebuilding you must have been rebuilding he must have been rebuilding we must have been rebuilding you must have been rebuilding they must have been rebuilding

Negation

Simple form	V-ing form
I must not rebuild you must not rebuild he must not rebuild we must not rebuild you must not rebuild they must not rebuild	I must not be rebuilding you must not be rebuilding he must not be rebuilding we must not be rebuilding you must not be rebuilding they must not be rebuilding
Perfect	V-ing perfect
I must not have rebuilt you must not have rebuilt he must not have rebuilt we must not have rebuilt you must not have rebuilt they must not have rebuilt	I must not have been rebuilding you must not have been rebuilding he must not have been rebuilding we must not have been rebuilding you must not have been rebuilding they must not have been rebuilding

Interrogative form

Simple form	V-ing form
must I rebuild? must you rebuild? must he rebuild? must we rebuild? must you rebuild? must they rebuild?	must I be rebuilding? must you be rebuilding? must he be rebuilding? must we be rebuilding? must you be rebuilding? must they be rebuilding?
Perfect	V-ing perfect
must I have rebuilt? must you have rebuilt? must he have rebuilt? must we have rebuilt? must you have rebuilt? must they have rebuilt?	must I have been rebuilding? must you have been rebuilding? must he have been rebuilding? must we have been rebuilding? must you have been rebuilding? must they have been rebuilding?

Interro-negative form

Simple form	V-ing form
must I not rebuild? must you not rebuild? must he not rebuild? must we not rebuild? must you not rebuild? must they not rebuild?	must I not be rebuilding? must you not be rebuilding? must he not be rebuilding? must we not be rebuilding? must you not be rebuilding? must they not be rebuilding?
Perfect	V-ing perfect
must I not have rebuilt? must you not have rebuilt? must he not have rebuilt? must we not have rebuilt? must you not have rebuilt? must they not have rebuilt?	must I not have been rebuilding? must you not have been rebuilding? must he not have been rebuilding? must we not have been rebuilding? must you not have been rebuilding? must they not have been rebuilding?