English verb conjugation
OUGHT TO DUPE

Regular verb: dupe - duped - duped

Affirmation

Simple form	V-ing form
I ought to dupe you ought to dupe she ought to dupe we ought to dupe you ought to dupe they ought to dupe	I ought to be duping you ought to be duping she ought to be duping we ought to be duping you ought to be duping they ought to be duping
Perfect	V-ing perfect
I ought to have duped you ought to have duped she ought to have duped we ought to have duped you ought to have duped they ought to have duped	I ought to have been duping you ought to have been duping she ought to have been duping we ought to have been duping you ought to have been duping they ought to have been duping

Negation

Simple form	V-ing form
I oughtn't to dupe you oughtn't to dupe she oughtn't to dupe we oughtn't to dupe you oughtn't to dupe they oughtn't to dupe	I oughtn't to be duping you oughtn't to be duping she oughtn't to be duping we oughtn't to be duping you oughtn't to be duping they oughtn't to be duping
Perfect	V-ing perfect
I oughtn't to have duped you oughtn't to have duped she oughtn't to have duped we oughtn't to have duped you oughtn't to have duped they oughtn't to have duped	I oughtn't to have been duping you oughtn't to have been duping she oughtn't to have been duping we oughtn't to have been duping you oughtn't to have been duping they oughtn't to have been duping

Interrogative form

Simple form	V-ing form
ought to I dupe? ought to you dupe? ought to she dupe? ought to we dupe? ought to you dupe? ought to they dupe?	ought to I be duping? ought to you be duping? ought to she be duping? ought to we be duping? ought to you be duping? ought to they be duping?
Perfect	V-ing perfect
ought to I have duped? ought to you have duped? ought to she have duped? ought to we have duped? ought to you have duped? ought to they have duped?	ought to I have been duping? ought to you have been duping? ought to she have been duping? ought to we have been duping? ought to you have been duping? ought to they have been duping?

Interro-negative form

Simple form	V-ing form
oughtn't I to dupe? oughtn't you to dupe? oughtn't she to dupe? oughtn't we to dupe? oughtn't you to dupe? oughtn't they to dupe?	oughtn't I to be duping? oughtn't you to be duping? oughtn't she to be duping? oughtn't we to be duping? oughtn't you to be duping? oughtn't they to be duping?
Perfect	V-ing perfect
oughtn't I to have duped? oughtn't you to have duped? oughtn't she to have duped? oughtn't we to have duped? oughtn't you to have duped? oughtn't they to have duped?	oughtn't I to have been duping? oughtn't you to have been duping? oughtn't she to have been duping? oughtn't we to have been duping? oughtn't you to have been duping? oughtn't they to have been duping?