must duplicate
Verbo regular: duplicate - duplicated- duplicated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not duplicate
you must not duplicate
he must not duplicate
we must not duplicate
you must not duplicate
they must not duplicate 	I must not be duplicating
you must not be duplicating
he must not be duplicating
we must not be duplicating
you must not be duplicating
they must not be duplicating	I must not have duplicated
you must not have duplicated
he must not have duplicated
we must not have duplicated
you must not have duplicated
they must not have duplicated	I must not have been duplicating
you must not have been duplicating
he must not have been duplicating
we must not have been duplicating
you must not have been duplicating
they must not have been duplicating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not duplicate?
must you not duplicate?
must he not duplicate?
must we not duplicate?
must you not duplicate?
must they not duplicate? 	must I not be duplicating?
must you not be duplicating?
must he not be duplicating?
must we not be duplicating?
must you not be duplicating?
must they not be duplicating? 	must I not have duplicated?
must you not have duplicated?
must he not have duplicated?
must we not have duplicated?
must you not have duplicated?
must they not have duplicated? 	must I not have been duplicating?
must you not have been duplicating?
must he not have been duplicating?
must we not have been duplicating?
must you not have been duplicating?
must they not have been duplicating?