English verb conjugation
MUST AIR-COOL

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

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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