I can ventriloquize you can ventriloquize he can ventriloquize we can ventriloquize you can ventriloquize they can ventriloquize
V-ing form
I can be ventriloquizing you can be ventriloquizing he can be ventriloquizing we can be ventriloquizing you can be ventriloquizing they can be ventriloquizing
Perfect
I can have ventriloquized you can have ventriloquized he can have ventriloquized we can have ventriloquized you can have ventriloquized they can have ventriloquized
V-ing perfect
I can have been ventriloquizing you can have been ventriloquizing he can have been ventriloquizing we can have been ventriloquizing you can have been ventriloquizing they can have been ventriloquizing
Negation
Simple form
I cannot ventriloquize you cannot ventriloquize he cannot ventriloquize we cannot ventriloquize you cannot ventriloquize they cannot ventriloquize
V-ing form
I cannot be ventriloquizing you cannot be ventriloquizing he cannot be ventriloquizing we cannot be ventriloquizing you cannot be ventriloquizing they cannot be ventriloquizing
Perfect
I cannot have ventriloquized you cannot have ventriloquized he cannot have ventriloquized we cannot have ventriloquized you cannot have ventriloquized they cannot have ventriloquized
V-ing perfect
I cannot have been ventriloquizing you cannot have been ventriloquizing he cannot have been ventriloquizing we cannot have been ventriloquizing you cannot have been ventriloquizing they cannot have been ventriloquizing
Interrogative form
Simple form
can I ventriloquize? can you ventriloquize? can he ventriloquize? can we ventriloquize? can you ventriloquize? can they ventriloquize?
V-ing form
can I be ventriloquizing? can you be ventriloquizing? can he be ventriloquizing? can we be ventriloquizing? can you be ventriloquizing? can they be ventriloquizing?
Perfect
can I have ventriloquized? can you have ventriloquized? can he have ventriloquized? can we have ventriloquized? can you have ventriloquized? can they have ventriloquized?
V-ing perfect
can I have been ventriloquizing? can you have been ventriloquizing? can he have been ventriloquizing? can we have been ventriloquizing? can you have been ventriloquizing? can they have been ventriloquizing?
Interro-negative form
Simple form
can I not ventriloquize? can you not ventriloquize? can he not ventriloquize? can we not ventriloquize? can you not ventriloquize? can they not ventriloquize?
V-ing form
can I not be ventriloquizing? can you not be ventriloquizing? can he not be ventriloquizing? can we not be ventriloquizing? can you not be ventriloquizing? can they not be ventriloquizing?
Perfect
can I not have ventriloquized? can you not have ventriloquized? can he not have ventriloquized? can we not have ventriloquized? can you not have ventriloquized? can they not have ventriloquized?
V-ing perfect
can I not have been ventriloquizing? can you not have been ventriloquizing? can he not have been ventriloquizing? can we not have been ventriloquizing? can you not have been ventriloquizing? can they not have been ventriloquizing?