must aid
Regular verb: aid - aided- aided

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must aid
you must aid
he must aid
we must aid
you must aid
they must aid 	I must be aiding
you must be aiding
he must be aiding
we must be aiding
you must be aiding
they must be aiding	I must have aided
you must have aided
he must have aided
we must have aided
you must have aided
they must have aided	I must have been aiding
you must have been aiding
he must have been aiding
we must have been aiding
you must have been aiding
they must have been aiding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't aid
you mustn't aid
he mustn't aid
we mustn't aid
you mustn't aid
they mustn't aid 	I mustn't be aiding
you mustn't be aiding
he mustn't be aiding
we mustn't be aiding
you mustn't be aiding
they mustn't be aiding	I mustn't have aided
you mustn't have aided
he mustn't have aided
we mustn't have aided
you mustn't have aided
they mustn't have aided	I mustn't have been aiding
you mustn't have been aiding
he mustn't have been aiding
we mustn't have been aiding
you mustn't have been aiding
they mustn't have been aiding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I aid?
must you aid?
must he aid?
must we aid?
must you aid?
must they aid? 	must I be aiding?
must you be aiding?
must he be aiding?
must we be aiding?
must you be aiding?
must they be aiding? 	must I have aided?
must you have aided?
must he have aided?
must we have aided?
must you have aided?
must they have aided? 	must I have been aiding?
must you have been aiding?
must he have been aiding?
must we have been aiding?
must you have been aiding?
must they have been aiding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I aid?
mustn't you aid?
mustn't he aid?
mustn't we aid?
mustn't you aid?
mustn't they aid? 	mustn't I be aiding?
mustn't you be aiding?
mustn't he be aiding?
mustn't we be aiding?
mustn't you be aiding?
mustn't they be aiding? 	mustn't I have aided?
mustn't you have aided?
mustn't he have aided?
mustn't we have aided?
mustn't you have aided?
mustn't they have aided? 	mustn't I have been aiding?
mustn't you have been aiding?
mustn't he have been aiding?
mustn't we have been aiding?
mustn't you have been aiding?
mustn't they have been aiding?