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 mustn't cool you mustn't cool he mustn't cool we mustn't cool you mustn't cool they mustn't cool	I mustn't be cooling you mustn't be cooling he mustn't be cooling we mustn't be cooling you mustn't be cooling they mustn't be cooling
Perfect	V-ing perfect
I mustn't have cooled you mustn't have cooled he mustn't have cooled we mustn't have cooled you mustn't have cooled they mustn't have cooled	I mustn't have been cooling you mustn't have been cooling he mustn't have been cooling we mustn't have been cooling you mustn't have been cooling they mustn't 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
mustn't I cool? mustn't you cool? mustn't he cool? mustn't we cool? mustn't you cool? mustn't they cool?	mustn't I be cooling? mustn't you be cooling? mustn't he be cooling? mustn't we be cooling? mustn't you be cooling? mustn't they be cooling?
Perfect	V-ing perfect
mustn't I have cooled? mustn't you have cooled? mustn't he have cooled? mustn't we have cooled? mustn't you have cooled? mustn't they have cooled?	mustn't I have been cooling? mustn't you have been cooling? mustn't he have been cooling? mustn't we have been cooling? mustn't you have been cooling? mustn't they have been cooling?