English verb conjugation
OUGHT TO JACKKNIFE

Regular verb: jackknife - jackknifed - jackknifed

Affirmation

Simple form	V-ing form
I ought to jackknife you ought to jackknife she ought to jackknife we ought to jackknife you ought to jackknife they ought to jackknife	I ought to be jackknifing you ought to be jackknifing she ought to be jackknifing we ought to be jackknifing you ought to be jackknifing they ought to be jackknifing
Perfect	V-ing perfect
I ought to have jackknifed you ought to have jackknifed she ought to have jackknifed we ought to have jackknifed you ought to have jackknifed they ought to have jackknifed	I ought to have been jackknifing you ought to have been jackknifing she ought to have been jackknifing we ought to have been jackknifing you ought to have been jackknifing they ought to have been jackknifing

Negation

Simple form	V-ing form
I oughtn't to jackknife you oughtn't to jackknife she oughtn't to jackknife we oughtn't to jackknife you oughtn't to jackknife they oughtn't to jackknife	I oughtn't to be jackknifing you oughtn't to be jackknifing she oughtn't to be jackknifing we oughtn't to be jackknifing you oughtn't to be jackknifing they oughtn't to be jackknifing
Perfect	V-ing perfect
I oughtn't to have jackknifed you oughtn't to have jackknifed she oughtn't to have jackknifed we oughtn't to have jackknifed you oughtn't to have jackknifed they oughtn't to have jackknifed	I oughtn't to have been jackknifing you oughtn't to have been jackknifing she oughtn't to have been jackknifing we oughtn't to have been jackknifing you oughtn't to have been jackknifing they oughtn't to have been jackknifing

Interrogative form

Simple form	V-ing form
ought to I jackknife? ought to you jackknife? ought to she jackknife? ought to we jackknife? ought to you jackknife? ought to they jackknife?	ought to I be jackknifing? ought to you be jackknifing? ought to she be jackknifing? ought to we be jackknifing? ought to you be jackknifing? ought to they be jackknifing?
Perfect	V-ing perfect
ought to I have jackknifed? ought to you have jackknifed? ought to she have jackknifed? ought to we have jackknifed? ought to you have jackknifed? ought to they have jackknifed?	ought to I have been jackknifing? ought to you have been jackknifing? ought to she have been jackknifing? ought to we have been jackknifing? ought to you have been jackknifing? ought to they have been jackknifing?

Interro-negative form

Simple form	V-ing form
oughtn't I to jackknife? oughtn't you to jackknife? oughtn't she to jackknife? oughtn't we to jackknife? oughtn't you to jackknife? oughtn't they to jackknife?	oughtn't I to be jackknifing? oughtn't you to be jackknifing? oughtn't she to be jackknifing? oughtn't we to be jackknifing? oughtn't you to be jackknifing? oughtn't they to be jackknifing?
Perfect	V-ing perfect
oughtn't I to have jackknifed? oughtn't you to have jackknifed? oughtn't she to have jackknifed? oughtn't we to have jackknifed? oughtn't you to have jackknifed? oughtn't they to have jackknifed?	oughtn't I to have been jackknifing? oughtn't you to have been jackknifing? oughtn't she to have been jackknifing? oughtn't we to have been jackknifing? oughtn't you to have been jackknifing? oughtn't they to have been jackknifing?