English verb conjugation
COULD REBUILD

Irregular verb: rebuild - rebuilt - rebuilt

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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