must elaborate
Regular verb: elaborate - elaborated- elaborated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must elaborate
you must elaborate
he must elaborate
we must elaborate
you must elaborate
they must elaborate 	I must be elaborating
you must be elaborating
he must be elaborating
we must be elaborating
you must be elaborating
they must be elaborating	I must have elaborated
you must have elaborated
he must have elaborated
we must have elaborated
you must have elaborated
they must have elaborated	I must have been elaborating
you must have been elaborating
he must have been elaborating
we must have been elaborating
you must have been elaborating
they must have been elaborating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't elaborate
you mustn't elaborate
he mustn't elaborate
we mustn't elaborate
you mustn't elaborate
they mustn't elaborate 	I mustn't be elaborating
you mustn't be elaborating
he mustn't be elaborating
we mustn't be elaborating
you mustn't be elaborating
they mustn't be elaborating	I mustn't have elaborated
you mustn't have elaborated
he mustn't have elaborated
we mustn't have elaborated
you mustn't have elaborated
they mustn't have elaborated	I mustn't have been elaborating
you mustn't have been elaborating
he mustn't have been elaborating
we mustn't have been elaborating
you mustn't have been elaborating
they mustn't have been elaborating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I elaborate?
must you elaborate?
must he elaborate?
must we elaborate?
must you elaborate?
must they elaborate? 	must I be elaborating?
must you be elaborating?
must he be elaborating?
must we be elaborating?
must you be elaborating?
must they be elaborating? 	must I have elaborated?
must you have elaborated?
must he have elaborated?
must we have elaborated?
must you have elaborated?
must they have elaborated? 	must I have been elaborating?
must you have been elaborating?
must he have been elaborating?
must we have been elaborating?
must you have been elaborating?
must they have been elaborating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I elaborate?
mustn't you elaborate?
mustn't he elaborate?
mustn't we elaborate?
mustn't you elaborate?
mustn't they elaborate? 	mustn't I be elaborating?
mustn't you be elaborating?
mustn't he be elaborating?
mustn't we be elaborating?
mustn't you be elaborating?
mustn't they be elaborating? 	mustn't I have elaborated?
mustn't you have elaborated?
mustn't he have elaborated?
mustn't we have elaborated?
mustn't you have elaborated?
mustn't they have elaborated? 	mustn't I have been elaborating?
mustn't you have been elaborating?
mustn't he have been elaborating?
mustn't we have been elaborating?
mustn't you have been elaborating?
mustn't they have been elaborating?