English verb conjugation
SHOULD UNDERHEAT

Regular verb: underheat - underheated - underheated

Affirmation

Simple form	V-ing form
I should underheat you should underheat he should underheat we should underheat you should underheat they should underheat	I should be underheating you should be underheating he should be underheating we should be underheating you should be underheating they should be underheating
Perfect	V-ing perfect
I should have underheated you should have underheated he should have underheated we should have underheated you should have underheated they should have underheated	I should have been underheating you should have been underheating he should have been underheating we should have been underheating you should have been underheating they should have been underheating

Negation

Simple form	V-ing form
I should not underheat you should not underheat he should not underheat we should not underheat you should not underheat they should not underheat	I should not be underheating you should not be underheating he should not be underheating we should not be underheating you should not be underheating they should not be underheating
Perfect	V-ing perfect
I should not have underheated you should not have underheated he should not have underheated we should not have underheated you should not have underheated they should not have underheated	I should not have been underheating you should not have been underheating he should not have been underheating we should not have been underheating you should not have been underheating they should not have been underheating

Interrogative form

Simple form	V-ing form
should I underheat? should you underheat? should he underheat? should we underheat? should you underheat? should they underheat?	should I be underheating? should you be underheating? should he be underheating? should we be underheating? should you be underheating? should they be underheating?
Perfect	V-ing perfect
should I have underheated? should you have underheated? should he have underheated? should we have underheated? should you have underheated? should they have underheated?	should I have been underheating? should you have been underheating? should he have been underheating? should we have been underheating? should you have been underheating? should they have been underheating?

Interro-negative form

Simple form	V-ing form
should I not underheat? should you not underheat? should he not underheat? should we not underheat? should you not underheat? should they not underheat?	should I not be underheating? should you not be underheating? should he not be underheating? should we not be underheating? should you not be underheating? should they not be underheating?
Perfect	V-ing perfect
should I not have underheated? should you not have underheated? should he not have underheated? should we not have underheated? should you not have underheated? should they not have underheated?	should I not have been underheating? should you not have been underheating? should he not have been underheating? should we not have been underheating? should you not have been underheating? should they not have been underheating?