English verb conjugation
SHOULD UNDERPRICE

Regular verb: underprice - underpriced - underpriced

Affirmation

Simple form	V-ing form
I should underprice you should underprice he should underprice we should underprice you should underprice they should underprice	I should be underpricing you should be underpricing he should be underpricing we should be underpricing you should be underpricing they should be underpricing
Perfect	V-ing perfect
I should have underpriced you should have underpriced he should have underpriced we should have underpriced you should have underpriced they should have underpriced	I should have been underpricing you should have been underpricing he should have been underpricing we should have been underpricing you should have been underpricing they should have been underpricing

Negation

Simple form	V-ing form
I should not underprice you should not underprice he should not underprice we should not underprice you should not underprice they should not underprice	I should not be underpricing you should not be underpricing he should not be underpricing we should not be underpricing you should not be underpricing they should not be underpricing
Perfect	V-ing perfect
I should not have underpriced you should not have underpriced he should not have underpriced we should not have underpriced you should not have underpriced they should not have underpriced	I should not have been underpricing you should not have been underpricing he should not have been underpricing we should not have been underpricing you should not have been underpricing they should not have been underpricing

Interrogative form

Simple form	V-ing form
should I underprice? should you underprice? should he underprice? should we underprice? should you underprice? should they underprice?	should I be underpricing? should you be underpricing? should he be underpricing? should we be underpricing? should you be underpricing? should they be underpricing?
Perfect	V-ing perfect
should I have underpriced? should you have underpriced? should he have underpriced? should we have underpriced? should you have underpriced? should they have underpriced?	should I have been underpricing? should you have been underpricing? should he have been underpricing? should we have been underpricing? should you have been underpricing? should they have been underpricing?

Interro-negative form

Simple form	V-ing form
should I not underprice? should you not underprice? should he not underprice? should we not underprice? should you not underprice? should they not underprice?	should I not be underpricing? should you not be underpricing? should he not be underpricing? should we not be underpricing? should you not be underpricing? should they not be underpricing?
Perfect	V-ing perfect
should I not have underpriced? should you not have underpriced? should he not have underpriced? should we not have underpriced? should you not have underpriced? should they not have underpriced?	should I not have been underpricing? should you not have been underpricing? should he not have been underpricing? should we not have been underpricing? should you not have been underpricing? should they not have been underpricing?