I can cool you can cool she can cool we can cool you can cool they can cool
V-ing form
I can be cooling you can be cooling she can be cooling we can be cooling you can be cooling they can be cooling
Perfect
I can have cooled you can have cooled she can have cooled we can have cooled you can have cooled they can have cooled
V-ing perfect
I can have been cooling you can have been cooling she can have been cooling we can have been cooling you can have been cooling they can have been cooling
Negation
Simple form
I cannot cool you cannot cool she cannot cool we cannot cool you cannot cool they cannot cool
V-ing form
I cannot be cooling you cannot be cooling she cannot be cooling we cannot be cooling you cannot be cooling they cannot be cooling
Perfect
I cannot have cooled you cannot have cooled she cannot have cooled we cannot have cooled you cannot have cooled they cannot have cooled
V-ing perfect
I cannot have been cooling you cannot have been cooling she cannot have been cooling we cannot have been cooling you cannot have been cooling they cannot have been cooling
Interrogative form
Simple form
can I cool? can you cool? can she cool? can we cool? can you cool? can they cool?
V-ing form
can I be cooling? can you be cooling? can she be cooling? can we be cooling? can you be cooling? can they be cooling?
Perfect
can I have cooled? can you have cooled? can she have cooled? can we have cooled? can you have cooled? can they have cooled?
V-ing perfect
can I have been cooling? can you have been cooling? can she have been cooling? can we have been cooling? can you have been cooling? can they have been cooling?
Interro-negative form
Simple form
can I not cool? can you not cool? can she not cool? can we not cool? can you not cool? can they not cool?
V-ing form
can I not be cooling? can you not be cooling? can she not be cooling? can we not be cooling? can you not be cooling? can they not be cooling?
Perfect
can I not have cooled? can you not have cooled? can she not have cooled? can we not have cooled? can you not have cooled? can they not have cooled?
V-ing perfect
can I not have been cooling? can you not have been cooling? can she not have been cooling? can we not have been cooling? can you not have been cooling? can they not have been cooling?