must aestivate
Regular verb: aestivate - aestivated- aestivated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must aestivate
you must aestivate
he must aestivate
we must aestivate
you must aestivate
they must aestivate 	I must be aestivating
you must be aestivating
he must be aestivating
we must be aestivating
you must be aestivating
they must be aestivating	I must have aestivated
you must have aestivated
he must have aestivated
we must have aestivated
you must have aestivated
they must have aestivated	I must have been aestivating
you must have been aestivating
he must have been aestivating
we must have been aestivating
you must have been aestivating
they must have been aestivating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't aestivate
you mustn't aestivate
he mustn't aestivate
we mustn't aestivate
you mustn't aestivate
they mustn't aestivate 	I mustn't be aestivating
you mustn't be aestivating
he mustn't be aestivating
we mustn't be aestivating
you mustn't be aestivating
they mustn't be aestivating	I mustn't have aestivated
you mustn't have aestivated
he mustn't have aestivated
we mustn't have aestivated
you mustn't have aestivated
they mustn't have aestivated	I mustn't have been aestivating
you mustn't have been aestivating
he mustn't have been aestivating
we mustn't have been aestivating
you mustn't have been aestivating
they mustn't have been aestivating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I aestivate?
must you aestivate?
must he aestivate?
must we aestivate?
must you aestivate?
must they aestivate? 	must I be aestivating?
must you be aestivating?
must he be aestivating?
must we be aestivating?
must you be aestivating?
must they be aestivating? 	must I have aestivated?
must you have aestivated?
must he have aestivated?
must we have aestivated?
must you have aestivated?
must they have aestivated? 	must I have been aestivating?
must you have been aestivating?
must he have been aestivating?
must we have been aestivating?
must you have been aestivating?
must they have been aestivating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I aestivate?
mustn't you aestivate?
mustn't he aestivate?
mustn't we aestivate?
mustn't you aestivate?
mustn't they aestivate? 	mustn't I be aestivating?
mustn't you be aestivating?
mustn't he be aestivating?
mustn't we be aestivating?
mustn't you be aestivating?
mustn't they be aestivating? 	mustn't I have aestivated?
mustn't you have aestivated?
mustn't he have aestivated?
mustn't we have aestivated?
mustn't you have aestivated?
mustn't they have aestivated? 	mustn't I have been aestivating?
mustn't you have been aestivating?
mustn't he have been aestivating?
mustn't we have been aestivating?
mustn't you have been aestivating?
mustn't they have been aestivating?