I must rebuild you must rebuild he must rebuild we must rebuild you must rebuild they must rebuild
V-ing form
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
I must have rebuilt you must have rebuilt he must have rebuilt we must have rebuilt you must have rebuilt they must have rebuilt
V-ing perfect
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
I must not rebuild you must not rebuild he must not rebuild we must not rebuild you must not rebuild they must not rebuild
V-ing form
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
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
V-ing perfect
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
must I rebuild? must you rebuild? must he rebuild? must we rebuild? must you rebuild? must they rebuild?
V-ing form
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
must I have rebuilt? must you have rebuilt? must he have rebuilt? must we have rebuilt? must you have rebuilt? must they have rebuilt?
V-ing perfect
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
must I not rebuild? must you not rebuild? must he not rebuild? must we not rebuild? must you not rebuild? must they not rebuild?
V-ing form
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
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?
V-ing perfect
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?