English verb conjugation
MUST DUPLICATE

Regular verb: duplicate - duplicated - duplicated

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?