English verb conjugation
OUGHT TO BACK

Regular verb: back - backed - backed

Affirmation

Simple form	V-ing form
I ought to back you ought to back she ought to back we ought to back you ought to back they ought to back	I ought to be backing you ought to be backing she ought to be backing we ought to be backing you ought to be backing they ought to be backing
Perfect	V-ing perfect
I ought to have backed you ought to have backed she ought to have backed we ought to have backed you ought to have backed they ought to have backed	I ought to have been backing you ought to have been backing she ought to have been backing we ought to have been backing you ought to have been backing they ought to have been backing

Negation

Simple form	V-ing form
I oughtn't to back you oughtn't to back she oughtn't to back we oughtn't to back you oughtn't to back they oughtn't to back	I oughtn't to be backing you oughtn't to be backing she oughtn't to be backing we oughtn't to be backing you oughtn't to be backing they oughtn't to be backing
Perfect	V-ing perfect
I oughtn't to have backed you oughtn't to have backed she oughtn't to have backed we oughtn't to have backed you oughtn't to have backed they oughtn't to have backed	I oughtn't to have been backing you oughtn't to have been backing she oughtn't to have been backing we oughtn't to have been backing you oughtn't to have been backing they oughtn't to have been backing

Interrogative form

Simple form	V-ing form
ought to I back? ought to you back? ought to she back? ought to we back? ought to you back? ought to they back?	ought to I be backing? ought to you be backing? ought to she be backing? ought to we be backing? ought to you be backing? ought to they be backing?
Perfect	V-ing perfect
ought to I have backed? ought to you have backed? ought to she have backed? ought to we have backed? ought to you have backed? ought to they have backed?	ought to I have been backing? ought to you have been backing? ought to she have been backing? ought to we have been backing? ought to you have been backing? ought to they have been backing?

Interro-negative form

Simple form	V-ing form
oughtn't I to back? oughtn't you to back? oughtn't she to back? oughtn't we to back? oughtn't you to back? oughtn't they to back?	oughtn't I to be backing? oughtn't you to be backing? oughtn't she to be backing? oughtn't we to be backing? oughtn't you to be backing? oughtn't they to be backing?
Perfect	V-ing perfect
oughtn't I to have backed? oughtn't you to have backed? oughtn't she to have backed? oughtn't we to have backed? oughtn't you to have backed? oughtn't they to have backed?	oughtn't I to have been backing? oughtn't you to have been backing? oughtn't she to have been backing? oughtn't we to have been backing? oughtn't you to have been backing? oughtn't they to have been backing?