I can redemonstrate you can redemonstrate she can redemonstrate we can redemonstrate you can redemonstrate they can redemonstrate
V-ing form
I can be redemonstrating you can be redemonstrating she can be redemonstrating we can be redemonstrating you can be redemonstrating they can be redemonstrating
Perfect
I can have redemonstrated you can have redemonstrated she can have redemonstrated we can have redemonstrated you can have redemonstrated they can have redemonstrated
V-ing perfect
I can have been redemonstrating you can have been redemonstrating she can have been redemonstrating we can have been redemonstrating you can have been redemonstrating they can have been redemonstrating
Negation
Simple form
I can't redemonstrate you can't redemonstrate she can't redemonstrate we can't redemonstrate you can't redemonstrate they can't redemonstrate
V-ing form
I can't be redemonstrating you can't be redemonstrating she can't be redemonstrating we can't be redemonstrating you can't be redemonstrating they can't be redemonstrating
Perfect
I can't have redemonstrated you can't have redemonstrated she can't have redemonstrated we can't have redemonstrated you can't have redemonstrated they can't have redemonstrated
V-ing perfect
I can't have been redemonstrating you can't have been redemonstrating she can't have been redemonstrating we can't have been redemonstrating you can't have been redemonstrating they can't have been redemonstrating
Interrogative form
Simple form
can I redemonstrate? can you redemonstrate? can she redemonstrate? can we redemonstrate? can you redemonstrate? can they redemonstrate?
V-ing form
can I be redemonstrating? can you be redemonstrating? can she be redemonstrating? can we be redemonstrating? can you be redemonstrating? can they be redemonstrating?
Perfect
can I have redemonstrated? can you have redemonstrated? can she have redemonstrated? can we have redemonstrated? can you have redemonstrated? can they have redemonstrated?
V-ing perfect
can I have been redemonstrating? can you have been redemonstrating? can she have been redemonstrating? can we have been redemonstrating? can you have been redemonstrating? can they have been redemonstrating?
Interro-negative form
Simple form
can't I redemonstrate? can't you redemonstrate? can't she redemonstrate? can't we redemonstrate? can't you redemonstrate? can't they redemonstrate?
V-ing form
can't I be redemonstrating? can't you be redemonstrating? can't she be redemonstrating? can't we be redemonstrating? can't you be redemonstrating? can't they be redemonstrating?
Perfect
can't I have redemonstrated? can't you have redemonstrated? can't she have redemonstrated? can't we have redemonstrated? can't you have redemonstrated? can't they have redemonstrated?
V-ing perfect
can't I have been redemonstrating? can't you have been redemonstrating? can't she have been redemonstrating? can't we have been redemonstrating? can't you have been redemonstrating? can't they have been redemonstrating?