should undo
Irregular verb: undo - undid- undone

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?