English verb conjugation
OUGHT TO UNDERGO

Irregular verb: undergo - underwent - undergone

Affirmation

Simple form	V-ing form
I ought to undergo you ought to undergo he ought to undergo we ought to undergo you ought to undergo they ought to undergo	I ought to be undergoing you ought to be undergoing he ought to be undergoing we ought to be undergoing you ought to be undergoing they ought to be undergoing
Perfect	V-ing perfect
I ought to have undergone you ought to have undergone he ought to have undergone we ought to have undergone you ought to have undergone they ought to have undergone	I ought to have been undergoing you ought to have been undergoing he ought to have been undergoing we ought to have been undergoing you ought to have been undergoing they ought to have been undergoing

Negation

Simple form	V-ing form
I oughtn't to undergo you oughtn't to undergo he oughtn't to undergo we oughtn't to undergo you oughtn't to undergo they oughtn't to undergo	I oughtn't to be undergoing you oughtn't to be undergoing he oughtn't to be undergoing we oughtn't to be undergoing you oughtn't to be undergoing they oughtn't to be undergoing
Perfect	V-ing perfect
I oughtn't to have undergone you oughtn't to have undergone he oughtn't to have undergone we oughtn't to have undergone you oughtn't to have undergone they oughtn't to have undergone	I oughtn't to have been undergoing you oughtn't to have been undergoing he oughtn't to have been undergoing we oughtn't to have been undergoing you oughtn't to have been undergoing they oughtn't to have been undergoing

Interrogative form

Simple form	V-ing form
ought to I undergo? ought to you undergo? ought to he undergo? ought to we undergo? ought to you undergo? ought to they undergo?	ought to I be undergoing? ought to you be undergoing? ought to he be undergoing? ought to we be undergoing? ought to you be undergoing? ought to they be undergoing?
Perfect	V-ing perfect
ought to I have undergone? ought to you have undergone? ought to he have undergone? ought to we have undergone? ought to you have undergone? ought to they have undergone?	ought to I have been undergoing? ought to you have been undergoing? ought to he have been undergoing? ought to we have been undergoing? ought to you have been undergoing? ought to they have been undergoing?

Interro-negative form

Simple form	V-ing form
oughtn't I to undergo? oughtn't you to undergo? oughtn't he to undergo? oughtn't we to undergo? oughtn't you to undergo? oughtn't they to undergo?	oughtn't I to be undergoing? oughtn't you to be undergoing? oughtn't he to be undergoing? oughtn't we to be undergoing? oughtn't you to be undergoing? oughtn't they to be undergoing?
Perfect	V-ing perfect
oughtn't I to have undergone? oughtn't you to have undergone? oughtn't he to have undergone? oughtn't we to have undergone? oughtn't you to have undergone? oughtn't they to have undergone?	oughtn't I to have been undergoing? oughtn't you to have been undergoing? oughtn't he to have been undergoing? oughtn't we to have been undergoing? oughtn't you to have been undergoing? oughtn't they to have been undergoing?