must air
Regular verb: air - aired- aired

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?