English verb conjugation
SHOULD UNDO

Irregular verb: undo - undid - undone

Affirmation

Simple form	V-ing form
I'd undo you'd undo he'd undo we'd undo you'd undo they'd undo	I'd be undoing you'd be undoing he'd be undoing we'd be undoing you'd be undoing they'd be undoing
Perfect	V-ing perfect
I should've undone you should've undone he should've undone we should've undone you should've undone they should've undone	I should've been undoing you should've been undoing he should've been undoing we should've been undoing you should've been undoing they should've been undoing

Negation

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

Interrogative form

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