English verb conjugation
SHOULD UNDERHEAT

Regular verb: underheat - underheated - underheated

Affirmation

Simple form	V-ing form
I'd underheat you'd underheat she'd underheat we'd underheat you'd underheat they'd underheat	I'd be underheating you'd be underheating she'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 she 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 she 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 she 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 she 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 she 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 she 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 she underheat? should we underheat? should you underheat? should they underheat?	should I be underheating? should you be underheating? should she 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 she 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 she 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 she 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 she 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 she 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 she have been underheating? shouldn't we have been underheating? shouldn't you have been underheating? shouldn't they have been underheating?