English verb conjugation
COULD AIR-COOL

Regular verb: air-cool - air-cooled - air-cooled

Affirmation

Simple form	V-ing form
I could air-cool you could air-cool she could air-cool we could air-cool you could air-cool they could air-cool	I could be air-cooling you could be air-cooling she could be air-cooling we could be air-cooling you could be air-cooling they could be air-cooling
Perfect	V-ing perfect
I could have air-cooled you could have air-cooled she could have air-cooled we could have air-cooled you could have air-cooled they could have air-cooled	I could have been air-cooling you could have been air-cooling she could have been air-cooling we could have been air-cooling you could have been air-cooling they could have been air-cooling

Negation

Simple form	V-ing form
I could not air-cool you could not air-cool she could not air-cool we could not air-cool you could not air-cool they could not air-cool	I could not be air-cooling you could not be air-cooling she could not be air-cooling we could not be air-cooling you could not be air-cooling they could not be air-cooling
Perfect	V-ing perfect
I could not have air-cooled you could not have air-cooled she could not have air-cooled we could not have air-cooled you could not have air-cooled they could not have air-cooled	I could not have been air-cooling you could not have been air-cooling she could not have been air-cooling we could not have been air-cooling you could not have been air-cooling they could not have been air-cooling

Interrogative form

Simple form	V-ing form
could I air-cool? could you air-cool? could she air-cool? could we air-cool? could you air-cool? could they air-cool?	could I be air-cooling? could you be air-cooling? could she be air-cooling? could we be air-cooling? could you be air-cooling? could they be air-cooling?
Perfect	V-ing perfect
could I have air-cooled? could you have air-cooled? could she have air-cooled? could we have air-cooled? could you have air-cooled? could they have air-cooled?	could I have been air-cooling? could you have been air-cooling? could she have been air-cooling? could we have been air-cooling? could you have been air-cooling? could they have been air-cooling?

Interro-negative form

Simple form	V-ing form
could I not air-cool? could you not air-cool? could she not air-cool? could we not air-cool? could you not air-cool? could they not air-cool?	could I not be air-cooling? could you not be air-cooling? could she not be air-cooling? could we not be air-cooling? could you not be air-cooling? could they not be air-cooling?
Perfect	V-ing perfect
could I not have air-cooled? could you not have air-cooled? could she not have air-cooled? could we not have air-cooled? could you not have air-cooled? could they not have air-cooled?	could I not have been air-cooling? could you not have been air-cooling? could she not have been air-cooling? could we not have been air-cooling? could you not have been air-cooling? could they not have been air-cooling?