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