could redemonstrate
Regular verb: redemonstrate - redemonstrated- redemonstrated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could redemonstrate
you could redemonstrate
she could redemonstrate
we could redemonstrate
you could redemonstrate
they could redemonstrate 	I could be redemonstrating
you could be redemonstrating
she could be redemonstrating
we could be redemonstrating
you could be redemonstrating
they could be redemonstrating	I could have redemonstrated
you could have redemonstrated
she could have redemonstrated
we could have redemonstrated
you could have redemonstrated
they could have redemonstrated	I could have been redemonstrating
you could have been redemonstrating
she could have been redemonstrating
we could have been redemonstrating
you could have been redemonstrating
they could have been redemonstrating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not redemonstrate
you could not redemonstrate
she could not redemonstrate
we could not redemonstrate
you could not redemonstrate
they could not redemonstrate 	I could not be redemonstrating
you could not be redemonstrating
she could not be redemonstrating
we could not be redemonstrating
you could not be redemonstrating
they could not be redemonstrating	I could not have redemonstrated
you could not have redemonstrated
she could not have redemonstrated
we could not have redemonstrated
you could not have redemonstrated
they could not have redemonstrated	I could not have been redemonstrating
you could not have been redemonstrating
she could not have been redemonstrating
we could not have been redemonstrating
you could not have been redemonstrating
they could not have been redemonstrating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I redemonstrate?
could you redemonstrate?
could she redemonstrate?
could we redemonstrate?
could you redemonstrate?
could they redemonstrate? 	could I be redemonstrating?
could you be redemonstrating?
could she be redemonstrating?
could we be redemonstrating?
could you be redemonstrating?
could they be redemonstrating? 	could I have redemonstrated?
could you have redemonstrated?
could she have redemonstrated?
could we have redemonstrated?
could you have redemonstrated?
could they have redemonstrated? 	could I have been redemonstrating?
could you have been redemonstrating?
could she have been redemonstrating?
could we have been redemonstrating?
could you have been redemonstrating?
could they have been redemonstrating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not redemonstrate?
could you not redemonstrate?
could she not redemonstrate?
could we not redemonstrate?
could you not redemonstrate?
could they not redemonstrate? 	could I not be redemonstrating?
could you not be redemonstrating?
could she not be redemonstrating?
could we not be redemonstrating?
could you not be redemonstrating?
could they not be redemonstrating? 	could I not have redemonstrated?
could you not have redemonstrated?
could she not have redemonstrated?
could we not have redemonstrated?
could you not have redemonstrated?
could they not have redemonstrated? 	could I not have been redemonstrating?
could you not have been redemonstrating?
could she not have been redemonstrating?
could we not have been redemonstrating?
could you not have been redemonstrating?
could they not have been redemonstrating?