I can redemonstrate you can redemonstrate he can redemonstrate we can redemonstrate you can redemonstrate they can redemonstrate
V-ing form
I can be redemonstrating you can be redemonstrating he can be redemonstrating we can be redemonstrating you can be redemonstrating they can be redemonstrating
Perfect
I can have redemonstrated you can have redemonstrated he 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 he 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 he 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 he 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 he 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 he 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 he redemonstrate? can we redemonstrate? can you redemonstrate? can they redemonstrate?
V-ing form
can I be redemonstrating? can you be redemonstrating? can he be redemonstrating? can we be redemonstrating? can you be redemonstrating? can they be redemonstrating?
Perfect
can I have redemonstrated? can you have redemonstrated? can he 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 he 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 he 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 he 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 he 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 he have been redemonstrating? can't we have been redemonstrating? can't you have been redemonstrating? can't they have been redemonstrating?