I can paddle you can paddle she can paddle we can paddle you can paddle they can paddle
V-ing form
I can be paddling you can be paddling she can be paddling we can be paddling you can be paddling they can be paddling
Perfect
I can have paddled you can have paddled she can have paddled we can have paddled you can have paddled they can have paddled
V-ing perfect
I can have been paddling you can have been paddling she can have been paddling we can have been paddling you can have been paddling they can have been paddling
Negation
Simple form
I cannot paddle you cannot paddle she cannot paddle we cannot paddle you cannot paddle they cannot paddle
V-ing form
I cannot be paddling you cannot be paddling she cannot be paddling we cannot be paddling you cannot be paddling they cannot be paddling
Perfect
I cannot have paddled you cannot have paddled she cannot have paddled we cannot have paddled you cannot have paddled they cannot have paddled
V-ing perfect
I cannot have been paddling you cannot have been paddling she cannot have been paddling we cannot have been paddling you cannot have been paddling they cannot have been paddling
Interrogative form
Simple form
can I paddle? can you paddle? can she paddle? can we paddle? can you paddle? can they paddle?
V-ing form
can I be paddling? can you be paddling? can she be paddling? can we be paddling? can you be paddling? can they be paddling?
Perfect
can I have paddled? can you have paddled? can she have paddled? can we have paddled? can you have paddled? can they have paddled?
V-ing perfect
can I have been paddling? can you have been paddling? can she have been paddling? can we have been paddling? can you have been paddling? can they have been paddling?
Interro-negative form
Simple form
can I not paddle? can you not paddle? can she not paddle? can we not paddle? can you not paddle? can they not paddle?
V-ing form
can I not be paddling? can you not be paddling? can she not be paddling? can we not be paddling? can you not be paddling? can they not be paddling?
Perfect
can I not have paddled? can you not have paddled? can she not have paddled? can we not have paddled? can you not have paddled? can they not have paddled?
V-ing perfect
can I not have been paddling? can you not have been paddling? can she not have been paddling? can we not have been paddling? can you not have been paddling? can they not have been paddling?