could rebuild
Irregular verb: rebuild - rebuilt- rebuilt

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