English verb conjugation
OUGHT TO KNOW

Irregular verb: know - knew - known

Affirmation

Simple form	V-ing form
I ought to know you ought to know she ought to know we ought to know you ought to know they ought to know	I ought to be knowing you ought to be knowing she ought to be knowing we ought to be knowing you ought to be knowing they ought to be knowing
Perfect	V-ing perfect
I ought to have known you ought to have known she ought to have known we ought to have known you ought to have known they ought to have known	I ought to have been knowing you ought to have been knowing she ought to have been knowing we ought to have been knowing you ought to have been knowing they ought to have been knowing

Negation

Simple form	V-ing form
I oughtn't to know you oughtn't to know she oughtn't to know we oughtn't to know you oughtn't to know they oughtn't to know	I oughtn't to be knowing you oughtn't to be knowing she oughtn't to be knowing we oughtn't to be knowing you oughtn't to be knowing they oughtn't to be knowing
Perfect	V-ing perfect
I oughtn't to have known you oughtn't to have known she oughtn't to have known we oughtn't to have known you oughtn't to have known they oughtn't to have known	I oughtn't to have been knowing you oughtn't to have been knowing she oughtn't to have been knowing we oughtn't to have been knowing you oughtn't to have been knowing they oughtn't to have been knowing

Interrogative form

Simple form	V-ing form
ought to I know? ought to you know? ought to she know? ought to we know? ought to you know? ought to they know?	ought to I be knowing? ought to you be knowing? ought to she be knowing? ought to we be knowing? ought to you be knowing? ought to they be knowing?
Perfect	V-ing perfect
ought to I have known? ought to you have known? ought to she have known? ought to we have known? ought to you have known? ought to they have known?	ought to I have been knowing? ought to you have been knowing? ought to she have been knowing? ought to we have been knowing? ought to you have been knowing? ought to they have been knowing?

Interro-negative form

Simple form	V-ing form
oughtn't I to know? oughtn't you to know? oughtn't she to know? oughtn't we to know? oughtn't you to know? oughtn't they to know?	oughtn't I to be knowing? oughtn't you to be knowing? oughtn't she to be knowing? oughtn't we to be knowing? oughtn't you to be knowing? oughtn't they to be knowing?
Perfect	V-ing perfect
oughtn't I to have known? oughtn't you to have known? oughtn't she to have known? oughtn't we to have known? oughtn't you to have known? oughtn't they to have known?	oughtn't I to have been knowing? oughtn't you to have been knowing? oughtn't she to have been knowing? oughtn't we to have been knowing? oughtn't you to have been knowing? oughtn't they to have been knowing?