English verb conjugation
OUGHT TO BACKDATE

Regular verb: backdate - backdated - backdated

Affirmation

Simple form	V-ing form
I ought to backdate you ought to backdate he ought to backdate we ought to backdate you ought to backdate they ought to backdate	I ought to be backdating you ought to be backdating he ought to be backdating we ought to be backdating you ought to be backdating they ought to be backdating
Perfect	V-ing perfect
I ought to have backdated you ought to have backdated he ought to have backdated we ought to have backdated you ought to have backdated they ought to have backdated	I ought to have been backdating you ought to have been backdating he ought to have been backdating we ought to have been backdating you ought to have been backdating they ought to have been backdating

Negation

Simple form	V-ing form
I oughtn't to backdate you oughtn't to backdate he oughtn't to backdate we oughtn't to backdate you oughtn't to backdate they oughtn't to backdate	I oughtn't to be backdating you oughtn't to be backdating he oughtn't to be backdating we oughtn't to be backdating you oughtn't to be backdating they oughtn't to be backdating
Perfect	V-ing perfect
I oughtn't to have backdated you oughtn't to have backdated he oughtn't to have backdated we oughtn't to have backdated you oughtn't to have backdated they oughtn't to have backdated	I oughtn't to have been backdating you oughtn't to have been backdating he oughtn't to have been backdating we oughtn't to have been backdating you oughtn't to have been backdating they oughtn't to have been backdating

Interrogative form

Simple form	V-ing form
ought to I backdate? ought to you backdate? ought to he backdate? ought to we backdate? ought to you backdate? ought to they backdate?	ought to I be backdating? ought to you be backdating? ought to he be backdating? ought to we be backdating? ought to you be backdating? ought to they be backdating?
Perfect	V-ing perfect
ought to I have backdated? ought to you have backdated? ought to he have backdated? ought to we have backdated? ought to you have backdated? ought to they have backdated?	ought to I have been backdating? ought to you have been backdating? ought to he have been backdating? ought to we have been backdating? ought to you have been backdating? ought to they have been backdating?

Interro-negative form

Simple form	V-ing form
oughtn't I to backdate? oughtn't you to backdate? oughtn't he to backdate? oughtn't we to backdate? oughtn't you to backdate? oughtn't they to backdate?	oughtn't I to be backdating? oughtn't you to be backdating? oughtn't he to be backdating? oughtn't we to be backdating? oughtn't you to be backdating? oughtn't they to be backdating?
Perfect	V-ing perfect
oughtn't I to have backdated? oughtn't you to have backdated? oughtn't he to have backdated? oughtn't we to have backdated? oughtn't you to have backdated? oughtn't they to have backdated?	oughtn't I to have been backdating? oughtn't you to have been backdating? oughtn't he to have been backdating? oughtn't we to have been backdating? oughtn't you to have been backdating? oughtn't they to have been backdating?