English verb conjugation
OUGHT TO INVALIDATE

Regular verb: invalidate - invalidated - invalidated

Affirmation

Simple form	V-ing form
I ought to invalidate you ought to invalidate he ought to invalidate we ought to invalidate you ought to invalidate they ought to invalidate	I ought to be invalidating you ought to be invalidating he ought to be invalidating we ought to be invalidating you ought to be invalidating they ought to be invalidating
Perfect	V-ing perfect
I ought to have invalidated you ought to have invalidated he ought to have invalidated we ought to have invalidated you ought to have invalidated they ought to have invalidated	I ought to have been invalidating you ought to have been invalidating he ought to have been invalidating we ought to have been invalidating you ought to have been invalidating they ought to have been invalidating

Negation

Simple form	V-ing form
I oughtn't to invalidate you oughtn't to invalidate he oughtn't to invalidate we oughtn't to invalidate you oughtn't to invalidate they oughtn't to invalidate	I oughtn't to be invalidating you oughtn't to be invalidating he oughtn't to be invalidating we oughtn't to be invalidating you oughtn't to be invalidating they oughtn't to be invalidating
Perfect	V-ing perfect
I oughtn't to have invalidated you oughtn't to have invalidated he oughtn't to have invalidated we oughtn't to have invalidated you oughtn't to have invalidated they oughtn't to have invalidated	I oughtn't to have been invalidating you oughtn't to have been invalidating he oughtn't to have been invalidating we oughtn't to have been invalidating you oughtn't to have been invalidating they oughtn't to have been invalidating

Interrogative form

Simple form	V-ing form
ought to I invalidate? ought to you invalidate? ought to he invalidate? ought to we invalidate? ought to you invalidate? ought to they invalidate?	ought to I be invalidating? ought to you be invalidating? ought to he be invalidating? ought to we be invalidating? ought to you be invalidating? ought to they be invalidating?
Perfect	V-ing perfect
ought to I have invalidated? ought to you have invalidated? ought to he have invalidated? ought to we have invalidated? ought to you have invalidated? ought to they have invalidated?	ought to I have been invalidating? ought to you have been invalidating? ought to he have been invalidating? ought to we have been invalidating? ought to you have been invalidating? ought to they have been invalidating?

Interro-negative form

Simple form	V-ing form
oughtn't I to invalidate? oughtn't you to invalidate? oughtn't he to invalidate? oughtn't we to invalidate? oughtn't you to invalidate? oughtn't they to invalidate?	oughtn't I to be invalidating? oughtn't you to be invalidating? oughtn't he to be invalidating? oughtn't we to be invalidating? oughtn't you to be invalidating? oughtn't they to be invalidating?
Perfect	V-ing perfect
oughtn't I to have invalidated? oughtn't you to have invalidated? oughtn't he to have invalidated? oughtn't we to have invalidated? oughtn't you to have invalidated? oughtn't they to have invalidated?	oughtn't I to have been invalidating? oughtn't you to have been invalidating? oughtn't he to have been invalidating? oughtn't we to have been invalidating? oughtn't you to have been invalidating? oughtn't they to have been invalidating?