English verb conjugation
MUST COOL

Regular verb: cool - cooled - cooled

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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