I can over you can over he can over we can over you can over they can over
V-ing form
I can be overing you can be overing he can be overing we can be overing you can be overing they can be overing
Perfect
I can have overed you can have overed he can have overed we can have overed you can have overed they can have overed
V-ing perfect
I can have been overing you can have been overing he can have been overing we can have been overing you can have been overing they can have been overing
Negation
Simple form
I cannot over you cannot over he cannot over we cannot over you cannot over they cannot over
V-ing form
I cannot be overing you cannot be overing he cannot be overing we cannot be overing you cannot be overing they cannot be overing
Perfect
I cannot have overed you cannot have overed he cannot have overed we cannot have overed you cannot have overed they cannot have overed
V-ing perfect
I cannot have been overing you cannot have been overing he cannot have been overing we cannot have been overing you cannot have been overing they cannot have been overing
Interrogative form
Simple form
can I over? can you over? can he over? can we over? can you over? can they over?
V-ing form
can I be overing? can you be overing? can he be overing? can we be overing? can you be overing? can they be overing?
Perfect
can I have overed? can you have overed? can he have overed? can we have overed? can you have overed? can they have overed?
V-ing perfect
can I have been overing? can you have been overing? can he have been overing? can we have been overing? can you have been overing? can they have been overing?
Interro-negative form
Simple form
can I not over? can you not over? can he not over? can we not over? can you not over? can they not over?
V-ing form
can I not be overing? can you not be overing? can he not be overing? can we not be overing? can you not be overing? can they not be overing?
Perfect
can I not have overed? can you not have overed? can he not have overed? can we not have overed? can you not have overed? can they not have overed?
V-ing perfect
can I not have been overing? can you not have been overing? can he not have been overing? can we not have been overing? can you not have been overing? can they not have been overing?