English verb conjugation
MUST AIR

Regular verb: air - aired - aired

Affirmation

Simple form	V-ing form
I must air you must air he must air we must air you must air they must air	I must be airing you must be airing he must be airing we must be airing you must be airing they must be airing
Perfect	V-ing perfect
I must have aired you must have aired he must have aired we must have aired you must have aired they must have aired	I must have been airing you must have been airing he must have been airing we must have been airing you must have been airing they must have been airing

Negation

Simple form	V-ing form
I mustn't air you mustn't air he mustn't air we mustn't air you mustn't air they mustn't air	I mustn't be airing you mustn't be airing he mustn't be airing we mustn't be airing you mustn't be airing they mustn't be airing
Perfect	V-ing perfect
I mustn't have aired you mustn't have aired he mustn't have aired we mustn't have aired you mustn't have aired they mustn't have aired	I mustn't have been airing you mustn't have been airing he mustn't have been airing we mustn't have been airing you mustn't have been airing they mustn't have been airing

Interrogative form

Simple form	V-ing form
must I air? must you air? must he air? must we air? must you air? must they air?	must I be airing? must you be airing? must he be airing? must we be airing? must you be airing? must they be airing?
Perfect	V-ing perfect
must I have aired? must you have aired? must he have aired? must we have aired? must you have aired? must they have aired?	must I have been airing? must you have been airing? must he have been airing? must we have been airing? must you have been airing? must they have been airing?

Interro-negative form

Simple form	V-ing form
mustn't I air? mustn't you air? mustn't he air? mustn't we air? mustn't you air? mustn't they air?	mustn't I be airing? mustn't you be airing? mustn't he be airing? mustn't we be airing? mustn't you be airing? mustn't they be airing?
Perfect	V-ing perfect
mustn't I have aired? mustn't you have aired? mustn't he have aired? mustn't we have aired? mustn't you have aired? mustn't they have aired?	mustn't I have been airing? mustn't you have been airing? mustn't he have been airing? mustn't we have been airing? mustn't you have been airing? mustn't they have been airing?