I can paddle you can paddle he can paddle we can paddle you can paddle they can paddle
V-ing form
I can be paddling you can be paddling he can be paddling we can be paddling you can be paddling they can be paddling
Perfect
I can have paddled you can have paddled he 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 he can have been paddling we can have been paddling you can have been paddling they can have been paddling
Negation
Simple form
I can't paddle you can't paddle he can't paddle we can't paddle you can't paddle they can't paddle
V-ing form
I can't be paddling you can't be paddling he can't be paddling we can't be paddling you can't be paddling they can't be paddling
Perfect
I can't have paddled you can't have paddled he can't have paddled we can't have paddled you can't have paddled they can't have paddled
V-ing perfect
I can't have been paddling you can't have been paddling he can't have been paddling we can't have been paddling you can't have been paddling they can't have been paddling
Interrogative form
Simple form
can I paddle? can you paddle? can he paddle? can we paddle? can you paddle? can they paddle?
V-ing form
can I be paddling? can you be paddling? can he be paddling? can we be paddling? can you be paddling? can they be paddling?
Perfect
can I have paddled? can you have paddled? can he 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 he have been paddling? can we have been paddling? can you have been paddling? can they have been paddling?
Interro-negative form
Simple form
can't I paddle? can't you paddle? can't he paddle? can't we paddle? can't you paddle? can't they paddle?
V-ing form
can't I be paddling? can't you be paddling? can't he be paddling? can't we be paddling? can't you be paddling? can't they be paddling?
Perfect
can't I have paddled? can't you have paddled? can't he have paddled? can't we have paddled? can't you have paddled? can't they have paddled?
V-ing perfect
can't I have been paddling? can't you have been paddling? can't he have been paddling? can't we have been paddling? can't you have been paddling? can't they have been paddling?