English verb conjugation
SHOULD UNDERPROP

Regular verb: underprop - underproped - underproped

Affirmation

Simple form	V-ing form
I should underprop you should underprop he should underprop we should underprop you should underprop they should underprop	I should be underproping you should be underproping he should be underproping we should be underproping you should be underproping they should be underproping
Perfect	V-ing perfect
I should have underproped you should have underproped he should have underproped we should have underproped you should have underproped they should have underproped	I should have been underproping you should have been underproping he should have been underproping we should have been underproping you should have been underproping they should have been underproping

Negation

Simple form	V-ing form
I should not underprop you should not underprop he should not underprop we should not underprop you should not underprop they should not underprop	I should not be underproping you should not be underproping he should not be underproping we should not be underproping you should not be underproping they should not be underproping
Perfect	V-ing perfect
I should not have underproped you should not have underproped he should not have underproped we should not have underproped you should not have underproped they should not have underproped	I should not have been underproping you should not have been underproping he should not have been underproping we should not have been underproping you should not have been underproping they should not have been underproping

Interrogative form

Simple form	V-ing form
should I underprop? should you underprop? should he underprop? should we underprop? should you underprop? should they underprop?	should I be underproping? should you be underproping? should he be underproping? should we be underproping? should you be underproping? should they be underproping?
Perfect	V-ing perfect
should I have underproped? should you have underproped? should he have underproped? should we have underproped? should you have underproped? should they have underproped?	should I have been underproping? should you have been underproping? should he have been underproping? should we have been underproping? should you have been underproping? should they have been underproping?

Interro-negative form

Simple form	V-ing form
should I not underprop? should you not underprop? should he not underprop? should we not underprop? should you not underprop? should they not underprop?	should I not be underproping? should you not be underproping? should he not be underproping? should we not be underproping? should you not be underproping? should they not be underproping?
Perfect	V-ing perfect
should I not have underproped? should you not have underproped? should he not have underproped? should we not have underproped? should you not have underproped? should they not have underproped?	should I not have been underproping? should you not have been underproping? should he not have been underproping? should we not have been underproping? should you not have been underproping? should they not have been underproping?