English verb conjugation
OUGHT TO FOREKNOW

Irregular verb: foreknow - foreknew - foreknown

Affirmation

Simple form	V-ing form
I ought to foreknow you ought to foreknow he ought to foreknow we ought to foreknow you ought to foreknow they ought to foreknow	I ought to be foreknowing you ought to be foreknowing he ought to be foreknowing we ought to be foreknowing you ought to be foreknowing they ought to be foreknowing
Perfect	V-ing perfect
I ought to have foreknown you ought to have foreknown he ought to have foreknown we ought to have foreknown you ought to have foreknown they ought to have foreknown	I ought to have been foreknowing you ought to have been foreknowing he ought to have been foreknowing we ought to have been foreknowing you ought to have been foreknowing they ought to have been foreknowing

Negation

Simple form	V-ing form
I oughtn't to foreknow you oughtn't to foreknow he oughtn't to foreknow we oughtn't to foreknow you oughtn't to foreknow they oughtn't to foreknow	I oughtn't to be foreknowing you oughtn't to be foreknowing he oughtn't to be foreknowing we oughtn't to be foreknowing you oughtn't to be foreknowing they oughtn't to be foreknowing
Perfect	V-ing perfect
I oughtn't to have foreknown you oughtn't to have foreknown he oughtn't to have foreknown we oughtn't to have foreknown you oughtn't to have foreknown they oughtn't to have foreknown	I oughtn't to have been foreknowing you oughtn't to have been foreknowing he oughtn't to have been foreknowing we oughtn't to have been foreknowing you oughtn't to have been foreknowing they oughtn't to have been foreknowing

Interrogative form

Simple form	V-ing form
ought to I foreknow? ought to you foreknow? ought to he foreknow? ought to we foreknow? ought to you foreknow? ought to they foreknow?	ought to I be foreknowing? ought to you be foreknowing? ought to he be foreknowing? ought to we be foreknowing? ought to you be foreknowing? ought to they be foreknowing?
Perfect	V-ing perfect
ought to I have foreknown? ought to you have foreknown? ought to he have foreknown? ought to we have foreknown? ought to you have foreknown? ought to they have foreknown?	ought to I have been foreknowing? ought to you have been foreknowing? ought to he have been foreknowing? ought to we have been foreknowing? ought to you have been foreknowing? ought to they have been foreknowing?

Interro-negative form

Simple form	V-ing form
oughtn't I to foreknow? oughtn't you to foreknow? oughtn't he to foreknow? oughtn't we to foreknow? oughtn't you to foreknow? oughtn't they to foreknow?	oughtn't I to be foreknowing? oughtn't you to be foreknowing? oughtn't he to be foreknowing? oughtn't we to be foreknowing? oughtn't you to be foreknowing? oughtn't they to be foreknowing?
Perfect	V-ing perfect
oughtn't I to have foreknown? oughtn't you to have foreknown? oughtn't he to have foreknown? oughtn't we to have foreknown? oughtn't you to have foreknown? oughtn't they to have foreknown?	oughtn't I to have been foreknowing? oughtn't you to have been foreknowing? oughtn't he to have been foreknowing? oughtn't we to have been foreknowing? oughtn't you to have been foreknowing? oughtn't they to have been foreknowing?