English verb conjugation
SHOULD UNDO

Irregular verb: undo - undid - undone

Affirmation

Simple form	V-ing form
I should undo you should undo she should undo we should undo you should undo they should undo	I should be undoing you should be undoing she should be undoing we should be undoing you should be undoing they should be undoing
Perfect	V-ing perfect
I should have undone you should have undone she should have undone we should have undone you should have undone they should have undone	I should have been undoing you should have been undoing she should have been undoing we should have been undoing you should have been undoing they should have been undoing

Negation

Simple form	V-ing form
I should not undo you should not undo she should not undo we should not undo you should not undo they should not undo	I should not be undoing you should not be undoing she should not be undoing we should not be undoing you should not be undoing they should not be undoing
Perfect	V-ing perfect
I should not have undone you should not have undone she should not have undone we should not have undone you should not have undone they should not have undone	I should not have been undoing you should not have been undoing she should not have been undoing we should not have been undoing you should not have been undoing they should not have been undoing

Interrogative form

Simple form	V-ing form
should I undo? should you undo? should she undo? should we undo? should you undo? should they undo?	should I be undoing? should you be undoing? should she be undoing? should we be undoing? should you be undoing? should they be undoing?
Perfect	V-ing perfect
should I have undone? should you have undone? should she have undone? should we have undone? should you have undone? should they have undone?	should I have been undoing? should you have been undoing? should she have been undoing? should we have been undoing? should you have been undoing? should they have been undoing?

Interro-negative form

Simple form	V-ing form
should I not undo? should you not undo? should she not undo? should we not undo? should you not undo? should they not undo?	should I not be undoing? should you not be undoing? should she not be undoing? should we not be undoing? should you not be undoing? should they not be undoing?
Perfect	V-ing perfect
should I not have undone? should you not have undone? should she not have undone? should we not have undone? should you not have undone? should they not have undone?	should I not have been undoing? should you not have been undoing? should she not have been undoing? should we not have been undoing? should you not have been undoing? should they not have been undoing?