must duplicate
Regular verb: duplicate - duplicated- duplicated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must duplicate
you must duplicate
he must duplicate
we must duplicate
you must duplicate
they must duplicate 	I must be duplicating
you must be duplicating
he must be duplicating
we must be duplicating
you must be duplicating
they must be duplicating	I must have duplicated
you must have duplicated
he must have duplicated
we must have duplicated
you must have duplicated
they must have duplicated	I must have been duplicating
you must have been duplicating
he must have been duplicating
we must have been duplicating
you must have been duplicating
they must have been duplicating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't duplicate
you mustn't duplicate
he mustn't duplicate
we mustn't duplicate
you mustn't duplicate
they mustn't duplicate 	I mustn't be duplicating
you mustn't be duplicating
he mustn't be duplicating
we mustn't be duplicating
you mustn't be duplicating
they mustn't be duplicating	I mustn't have duplicated
you mustn't have duplicated
he mustn't have duplicated
we mustn't have duplicated
you mustn't have duplicated
they mustn't have duplicated	I mustn't have been duplicating
you mustn't have been duplicating
he mustn't have been duplicating
we mustn't have been duplicating
you mustn't have been duplicating
they mustn't have been duplicating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I duplicate?
must you duplicate?
must he duplicate?
must we duplicate?
must you duplicate?
must they duplicate? 	must I be duplicating?
must you be duplicating?
must he be duplicating?
must we be duplicating?
must you be duplicating?
must they be duplicating? 	must I have duplicated?
must you have duplicated?
must he have duplicated?
must we have duplicated?
must you have duplicated?
must they have duplicated? 	must I have been duplicating?
must you have been duplicating?
must he have been duplicating?
must we have been duplicating?
must you have been duplicating?
must they have been duplicating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I duplicate?
mustn't you duplicate?
mustn't he duplicate?
mustn't we duplicate?
mustn't you duplicate?
mustn't they duplicate? 	mustn't I be duplicating?
mustn't you be duplicating?
mustn't he be duplicating?
mustn't we be duplicating?
mustn't you be duplicating?
mustn't they be duplicating? 	mustn't I have duplicated?
mustn't you have duplicated?
mustn't he have duplicated?
mustn't we have duplicated?
mustn't you have duplicated?
mustn't they have duplicated? 	mustn't I have been duplicating?
mustn't you have been duplicating?
mustn't he have been duplicating?
mustn't we have been duplicating?
mustn't you have been duplicating?
mustn't they have been duplicating?