English verb conjugation
OUGHT TO UNDO

Irregular verb: undo - undid - undone

Affirmation

Simple form	V-ing form
I ought to undo you ought to undo he ought to undo we ought to undo you ought to undo they ought to undo	I ought to be undoing you ought to be undoing he ought to be undoing we ought to be undoing you ought to be undoing they ought to be undoing
Perfect	V-ing perfect
I ought to have undone you ought to have undone he ought to have undone we ought to have undone you ought to have undone they ought to have undone	I ought to have been undoing you ought to have been undoing he ought to have been undoing we ought to have been undoing you ought to have been undoing they ought to have been undoing

Negation

Simple form	V-ing form
I oughtn't to undo you oughtn't to undo he oughtn't to undo we oughtn't to undo you oughtn't to undo they oughtn't to undo	I oughtn't to be undoing you oughtn't to be undoing he oughtn't to be undoing we oughtn't to be undoing you oughtn't to be undoing they oughtn't to be undoing
Perfect	V-ing perfect
I oughtn't to have undone you oughtn't to have undone he oughtn't to have undone we oughtn't to have undone you oughtn't to have undone they oughtn't to have undone	I oughtn't to have been undoing you oughtn't to have been undoing he oughtn't to have been undoing we oughtn't to have been undoing you oughtn't to have been undoing they oughtn't to have been undoing

Interrogative form

Simple form	V-ing form
ought to I undo? ought to you undo? ought to he undo? ought to we undo? ought to you undo? ought to they undo?	ought to I be undoing? ought to you be undoing? ought to he be undoing? ought to we be undoing? ought to you be undoing? ought to they be undoing?
Perfect	V-ing perfect
ought to I have undone? ought to you have undone? ought to he have undone? ought to we have undone? ought to you have undone? ought to they have undone?	ought to I have been undoing? ought to you have been undoing? ought to he have been undoing? ought to we have been undoing? ought to you have been undoing? ought to they have been undoing?

Interro-negative form

Simple form	V-ing form
oughtn't I to undo? oughtn't you to undo? oughtn't he to undo? oughtn't we to undo? oughtn't you to undo? oughtn't they to undo?	oughtn't I to be undoing? oughtn't you to be undoing? oughtn't he to be undoing? oughtn't we to be undoing? oughtn't you to be undoing? oughtn't they to be undoing?
Perfect	V-ing perfect
oughtn't I to have undone? oughtn't you to have undone? oughtn't he to have undone? oughtn't we to have undone? oughtn't you to have undone? oughtn't they to have undone?	oughtn't I to have been undoing? oughtn't you to have been undoing? oughtn't he to have been undoing? oughtn't we to have been undoing? oughtn't you to have been undoing? oughtn't they to have been undoing?