could rejuvenate
Regular verb: rejuvenate - rejuvenated- rejuvenated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could rejuvenate
you could rejuvenate
she could rejuvenate
we could rejuvenate
you could rejuvenate
they could rejuvenate 	I could be rejuvenating
you could be rejuvenating
she could be rejuvenating
we could be rejuvenating
you could be rejuvenating
they could be rejuvenating	I could have rejuvenated
you could have rejuvenated
she could have rejuvenated
we could have rejuvenated
you could have rejuvenated
they could have rejuvenated	I could have been rejuvenating
you could have been rejuvenating
she could have been rejuvenating
we could have been rejuvenating
you could have been rejuvenating
they could have been rejuvenating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not rejuvenate
you could not rejuvenate
she could not rejuvenate
we could not rejuvenate
you could not rejuvenate
they could not rejuvenate 	I could not be rejuvenating
you could not be rejuvenating
she could not be rejuvenating
we could not be rejuvenating
you could not be rejuvenating
they could not be rejuvenating	I could not have rejuvenated
you could not have rejuvenated
she could not have rejuvenated
we could not have rejuvenated
you could not have rejuvenated
they could not have rejuvenated	I could not have been rejuvenating
you could not have been rejuvenating
she could not have been rejuvenating
we could not have been rejuvenating
you could not have been rejuvenating
they could not have been rejuvenating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I rejuvenate?
could you rejuvenate?
could she rejuvenate?
could we rejuvenate?
could you rejuvenate?
could they rejuvenate? 	could I be rejuvenating?
could you be rejuvenating?
could she be rejuvenating?
could we be rejuvenating?
could you be rejuvenating?
could they be rejuvenating? 	could I have rejuvenated?
could you have rejuvenated?
could she have rejuvenated?
could we have rejuvenated?
could you have rejuvenated?
could they have rejuvenated? 	could I have been rejuvenating?
could you have been rejuvenating?
could she have been rejuvenating?
could we have been rejuvenating?
could you have been rejuvenating?
could they have been rejuvenating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not rejuvenate?
could you not rejuvenate?
could she not rejuvenate?
could we not rejuvenate?
could you not rejuvenate?
could they not rejuvenate? 	could I not be rejuvenating?
could you not be rejuvenating?
could she not be rejuvenating?
could we not be rejuvenating?
could you not be rejuvenating?
could they not be rejuvenating? 	could I not have rejuvenated?
could you not have rejuvenated?
could she not have rejuvenated?
could we not have rejuvenated?
could you not have rejuvenated?
could they not have rejuvenated? 	could I not have been rejuvenating?
could you not have been rejuvenating?
could she not have been rejuvenating?
could we not have been rejuvenating?
could you not have been rejuvenating?
could they not have been rejuvenating?