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 ought not to know you ought not to know she ought not to know we ought not to know you ought not to know they ought not to know	I ought not to knowing you ought not to knowing she ought not to knowing we ought not to knowing you ought not to knowing they ought not to knowing
Perfect	V-ing perfect
I ought not to have known you ought not to have known she ought not to have known we ought not to have known you ought not to have known they ought not to have known	I ought not to have been knowing you ought not to have been knowing she ought not to have been knowing we ought not to have been knowing you ought not to have been knowing they ought not 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
ought I not to know? ought you not to know? ought she not to know? ought we not to know? ought you not to know? ought they not to know?	ought I not to be knowing? ought you not to be knowing? ought she not to be knowing? ought we not to be knowing? ought you not to be knowing? ought they not to be knowing?
Perfect	V-ing perfect
ought I not to have known? ought you not to have known? ought she not to have known? ought we not to have known? ought you not to have known? ought they not to have known?	ought I not to have been knowing? ought you not to have been knowing? ought she not to have been knowing? ought we not to have been knowing? ought you not to have been knowing? ought they not to have been knowing?