English verb conjugation
OUGHT TO FOREFEND

Regular verb: forefend - forefended - forefended

Affirmation

Simple form	V-ing form
I ought to forefend you ought to forefend she ought to forefend we ought to forefend you ought to forefend they ought to forefend	I ought to be forefending you ought to be forefending she ought to be forefending we ought to be forefending you ought to be forefending they ought to be forefending
Perfect	V-ing perfect
I ought to have forefended you ought to have forefended she ought to have forefended we ought to have forefended you ought to have forefended they ought to have forefended	I ought to have been forefending you ought to have been forefending she ought to have been forefending we ought to have been forefending you ought to have been forefending they ought to have been forefending

Negation

Simple form	V-ing form
I oughtn't to forefend you oughtn't to forefend she oughtn't to forefend we oughtn't to forefend you oughtn't to forefend they oughtn't to forefend	I oughtn't to be forefending you oughtn't to be forefending she oughtn't to be forefending we oughtn't to be forefending you oughtn't to be forefending they oughtn't to be forefending
Perfect	V-ing perfect
I oughtn't to have forefended you oughtn't to have forefended she oughtn't to have forefended we oughtn't to have forefended you oughtn't to have forefended they oughtn't to have forefended	I oughtn't to have been forefending you oughtn't to have been forefending she oughtn't to have been forefending we oughtn't to have been forefending you oughtn't to have been forefending they oughtn't to have been forefending

Interrogative form

Simple form	V-ing form
ought to I forefend? ought to you forefend? ought to she forefend? ought to we forefend? ought to you forefend? ought to they forefend?	ought to I be forefending? ought to you be forefending? ought to she be forefending? ought to we be forefending? ought to you be forefending? ought to they be forefending?
Perfect	V-ing perfect
ought to I have forefended? ought to you have forefended? ought to she have forefended? ought to we have forefended? ought to you have forefended? ought to they have forefended?	ought to I have been forefending? ought to you have been forefending? ought to she have been forefending? ought to we have been forefending? ought to you have been forefending? ought to they have been forefending?

Interro-negative form

Simple form	V-ing form
oughtn't I to forefend? oughtn't you to forefend? oughtn't she to forefend? oughtn't we to forefend? oughtn't you to forefend? oughtn't they to forefend?	oughtn't I to be forefending? oughtn't you to be forefending? oughtn't she to be forefending? oughtn't we to be forefending? oughtn't you to be forefending? oughtn't they to be forefending?
Perfect	V-ing perfect
oughtn't I to have forefended? oughtn't you to have forefended? oughtn't she to have forefended? oughtn't we to have forefended? oughtn't you to have forefended? oughtn't they to have forefended?	oughtn't I to have been forefending? oughtn't you to have been forefending? oughtn't she to have been forefending? oughtn't we to have been forefending? oughtn't you to have been forefending? oughtn't they to have been forefending?