English verb conjugation
SHOULD UNDERHEAT

Regular verb: underheat - underheated - underheated

Affirmation

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

Negation

Simple form	V-ing form
I shouldn't underheat you shouldn't underheat he shouldn't underheat we shouldn't underheat you shouldn't underheat they shouldn't underheat	I shouldn't be underheating you shouldn't be underheating he shouldn't be underheating we shouldn't be underheating you shouldn't be underheating they shouldn't be underheating
Perfect	V-ing perfect
I shouldn't have underheated you shouldn't have underheated he shouldn't have underheated we shouldn't have underheated you shouldn't have underheated they shouldn't have underheated	I shouldn't have been underheating you shouldn't have been underheating he shouldn't have been underheating we shouldn't have been underheating you shouldn't have been underheating they shouldn't 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
shouldn't I underheat? shouldn't you underheat? shouldn't he underheat? shouldn't we underheat? shouldn't you underheat? shouldn't they underheat?	shouldn't I be underheating? shouldn't you be underheating? shouldn't he be underheating? shouldn't we be underheating? shouldn't you be underheating? shouldn't they be underheating?
Perfect	V-ing perfect
shouldn't I have underheated? shouldn't you have underheated? shouldn't he have underheated? shouldn't we have underheated? shouldn't you have underheated? shouldn't they have underheated?	shouldn't I have been underheating? shouldn't you have been underheating? shouldn't he have been underheating? shouldn't we have been underheating? shouldn't you have been underheating? shouldn't they have been underheating?