must expatiate
Regular verb: expatiate - expatiated- expatiated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must expatiate
you must expatiate
he must expatiate
we must expatiate
you must expatiate
they must expatiate 	I must be expatiating
you must be expatiating
he must be expatiating
we must be expatiating
you must be expatiating
they must be expatiating	I must have expatiated
you must have expatiated
he must have expatiated
we must have expatiated
you must have expatiated
they must have expatiated	I must have been expatiating
you must have been expatiating
he must have been expatiating
we must have been expatiating
you must have been expatiating
they must have been expatiating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't expatiate
you mustn't expatiate
he mustn't expatiate
we mustn't expatiate
you mustn't expatiate
they mustn't expatiate 	I mustn't be expatiating
you mustn't be expatiating
he mustn't be expatiating
we mustn't be expatiating
you mustn't be expatiating
they mustn't be expatiating	I mustn't have expatiated
you mustn't have expatiated
he mustn't have expatiated
we mustn't have expatiated
you mustn't have expatiated
they mustn't have expatiated	I mustn't have been expatiating
you mustn't have been expatiating
he mustn't have been expatiating
we mustn't have been expatiating
you mustn't have been expatiating
they mustn't have been expatiating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I expatiate?
must you expatiate?
must he expatiate?
must we expatiate?
must you expatiate?
must they expatiate? 	must I be expatiating?
must you be expatiating?
must he be expatiating?
must we be expatiating?
must you be expatiating?
must they be expatiating? 	must I have expatiated?
must you have expatiated?
must he have expatiated?
must we have expatiated?
must you have expatiated?
must they have expatiated? 	must I have been expatiating?
must you have been expatiating?
must he have been expatiating?
must we have been expatiating?
must you have been expatiating?
must they have been expatiating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I expatiate?
mustn't you expatiate?
mustn't he expatiate?
mustn't we expatiate?
mustn't you expatiate?
mustn't they expatiate? 	mustn't I be expatiating?
mustn't you be expatiating?
mustn't he be expatiating?
mustn't we be expatiating?
mustn't you be expatiating?
mustn't they be expatiating? 	mustn't I have expatiated?
mustn't you have expatiated?
mustn't he have expatiated?
mustn't we have expatiated?
mustn't you have expatiated?
mustn't they have expatiated? 	mustn't I have been expatiating?
mustn't you have been expatiating?
mustn't he have been expatiating?
mustn't we have been expatiating?
mustn't you have been expatiating?
mustn't they have been expatiating?