must iterate
Regular verb: iterate - iterated- iterated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must iterate
you must iterate
he must iterate
we must iterate
you must iterate
they must iterate 	I must be iterating
you must be iterating
he must be iterating
we must be iterating
you must be iterating
they must be iterating	I must have iterated
you must have iterated
he must have iterated
we must have iterated
you must have iterated
they must have iterated	I must have been iterating
you must have been iterating
he must have been iterating
we must have been iterating
you must have been iterating
they must have been iterating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't iterate
you mustn't iterate
he mustn't iterate
we mustn't iterate
you mustn't iterate
they mustn't iterate 	I mustn't be iterating
you mustn't be iterating
he mustn't be iterating
we mustn't be iterating
you mustn't be iterating
they mustn't be iterating	I mustn't have iterated
you mustn't have iterated
he mustn't have iterated
we mustn't have iterated
you mustn't have iterated
they mustn't have iterated	I mustn't have been iterating
you mustn't have been iterating
he mustn't have been iterating
we mustn't have been iterating
you mustn't have been iterating
they mustn't have been iterating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I iterate?
must you iterate?
must he iterate?
must we iterate?
must you iterate?
must they iterate? 	must I be iterating?
must you be iterating?
must he be iterating?
must we be iterating?
must you be iterating?
must they be iterating? 	must I have iterated?
must you have iterated?
must he have iterated?
must we have iterated?
must you have iterated?
must they have iterated? 	must I have been iterating?
must you have been iterating?
must he have been iterating?
must we have been iterating?
must you have been iterating?
must they have been iterating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I iterate?
mustn't you iterate?
mustn't he iterate?
mustn't we iterate?
mustn't you iterate?
mustn't they iterate? 	mustn't I be iterating?
mustn't you be iterating?
mustn't he be iterating?
mustn't we be iterating?
mustn't you be iterating?
mustn't they be iterating? 	mustn't I have iterated?
mustn't you have iterated?
mustn't he have iterated?
mustn't we have iterated?
mustn't you have iterated?
mustn't they have iterated? 	mustn't I have been iterating?
mustn't you have been iterating?
mustn't he have been iterating?
mustn't we have been iterating?
mustn't you have been iterating?
mustn't they have been iterating?