must manipulate
Regular verb: manipulate - manipulated- manipulated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must manipulate
you must manipulate
he must manipulate
we must manipulate
you must manipulate
they must manipulate 	I must be manipulating
you must be manipulating
he must be manipulating
we must be manipulating
you must be manipulating
they must be manipulating	I must have manipulated
you must have manipulated
he must have manipulated
we must have manipulated
you must have manipulated
they must have manipulated	I must have been manipulating
you must have been manipulating
he must have been manipulating
we must have been manipulating
you must have been manipulating
they must have been manipulating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't manipulate
you mustn't manipulate
he mustn't manipulate
we mustn't manipulate
you mustn't manipulate
they mustn't manipulate 	I mustn't be manipulating
you mustn't be manipulating
he mustn't be manipulating
we mustn't be manipulating
you mustn't be manipulating
they mustn't be manipulating	I mustn't have manipulated
you mustn't have manipulated
he mustn't have manipulated
we mustn't have manipulated
you mustn't have manipulated
they mustn't have manipulated	I mustn't have been manipulating
you mustn't have been manipulating
he mustn't have been manipulating
we mustn't have been manipulating
you mustn't have been manipulating
they mustn't have been manipulating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I manipulate?
must you manipulate?
must he manipulate?
must we manipulate?
must you manipulate?
must they manipulate? 	must I be manipulating?
must you be manipulating?
must he be manipulating?
must we be manipulating?
must you be manipulating?
must they be manipulating? 	must I have manipulated?
must you have manipulated?
must he have manipulated?
must we have manipulated?
must you have manipulated?
must they have manipulated? 	must I have been manipulating?
must you have been manipulating?
must he have been manipulating?
must we have been manipulating?
must you have been manipulating?
must they have been manipulating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I manipulate?
mustn't you manipulate?
mustn't he manipulate?
mustn't we manipulate?
mustn't you manipulate?
mustn't they manipulate? 	mustn't I be manipulating?
mustn't you be manipulating?
mustn't he be manipulating?
mustn't we be manipulating?
mustn't you be manipulating?
mustn't they be manipulating? 	mustn't I have manipulated?
mustn't you have manipulated?
mustn't he have manipulated?
mustn't we have manipulated?
mustn't you have manipulated?
mustn't they have manipulated? 	mustn't I have been manipulating?
mustn't you have been manipulating?
mustn't he have been manipulating?
mustn't we have been manipulating?
mustn't you have been manipulating?
mustn't they have been manipulating?