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 must not air you must not air he must not air we must not air you must not air they must not air	I must not be airing you must not be airing he must not be airing we must not be airing you must not be airing they must not be airing
Perfect	V-ing perfect
I must not have aired you must not have aired he must not have aired we must not have aired you must not have aired they must not have aired	I must not have been airing you must not have been airing he must not have been airing we must not have been airing you must not have been airing they must not 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
must I not air? must you not air? must he not air? must we not air? must you not air? must they not air?	must I not be airing? must you not be airing? must he not be airing? must we not be airing? must you not be airing? must they not be airing?
Perfect	V-ing perfect
must I not have aired? must you not have aired? must he not have aired? must we not have aired? must you not have aired? must they not have aired?	must I not have been airing? must you not have been airing? must he not have been airing? must we not have been airing? must you not have been airing? must they not have been airing?