English verb conjugation
COULD REDEMONSTRATE

Regular verb: redemonstrate - redemonstrated - redemonstrated

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
I couldn't redemonstrate you couldn't redemonstrate she couldn't redemonstrate we couldn't redemonstrate you couldn't redemonstrate they couldn't redemonstrate	I couldn't be redemonstrating you couldn't be redemonstrating she couldn't be redemonstrating we couldn't be redemonstrating you couldn't be redemonstrating they couldn't be redemonstrating
Perfect	V-ing perfect
I couldn't have redemonstrated you couldn't have redemonstrated she couldn't have redemonstrated we couldn't have redemonstrated you couldn't have redemonstrated they couldn't have redemonstrated	I couldn't have been redemonstrating you couldn't have been redemonstrating she couldn't have been redemonstrating we couldn't have been redemonstrating you couldn't have been redemonstrating they couldn't have been redemonstrating

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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
couldn't I redemonstrate? couldn't you redemonstrate? couldn't she redemonstrate? couldn't we redemonstrate? couldn't you redemonstrate? couldn't they redemonstrate?	couldn't I be redemonstrating? couldn't you be redemonstrating? couldn't she be redemonstrating? couldn't we be redemonstrating? couldn't you be redemonstrating? couldn't they be redemonstrating?
Perfect	V-ing perfect
couldn't I have redemonstrated? couldn't you have redemonstrated? couldn't she have redemonstrated? couldn't we have redemonstrated? couldn't you have redemonstrated? couldn't they have redemonstrated?	couldn't I have been redemonstrating? couldn't you have been redemonstrating? couldn't she have been redemonstrating? couldn't we have been redemonstrating? couldn't you have been redemonstrating? couldn't they have been redemonstrating?