ought to duplicate
Regular verb: duplicate - duplicated- duplicated

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

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

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

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