English verb conjugation
SHOULD UNDERSCORE

Regular verb: underscore - underscored - underscored

Affirmation

Simple form	V-ing form
I'd underscore you'd underscore he'd underscore we'd underscore you'd underscore they'd underscore	I'd be underscoring you'd be underscoring he'd be underscoring we'd be underscoring you'd be underscoring they'd be underscoring
Perfect	V-ing perfect
I should've underscored you should've underscored he should've underscored we should've underscored you should've underscored they should've underscored	I should've been underscoring you should've been underscoring he should've been underscoring we should've been underscoring you should've been underscoring they should've been underscoring

Negation

Simple form	V-ing form
I shouldn't underscore you shouldn't underscore he shouldn't underscore we shouldn't underscore you shouldn't underscore they shouldn't underscore	I shouldn't be underscoring you shouldn't be underscoring he shouldn't be underscoring we shouldn't be underscoring you shouldn't be underscoring they shouldn't be underscoring
Perfect	V-ing perfect
I shouldn't have underscored you shouldn't have underscored he shouldn't have underscored we shouldn't have underscored you shouldn't have underscored they shouldn't have underscored	I shouldn't have been underscoring you shouldn't have been underscoring he shouldn't have been underscoring we shouldn't have been underscoring you shouldn't have been underscoring they shouldn't have been underscoring

Interrogative form

Simple form	V-ing form
should I underscore? should you underscore? should he underscore? should we underscore? should you underscore? should they underscore?	should I be underscoring? should you be underscoring? should he be underscoring? should we be underscoring? should you be underscoring? should they be underscoring?
Perfect	V-ing perfect
should I have underscored? should you have underscored? should he have underscored? should we have underscored? should you have underscored? should they have underscored?	should I have been underscoring? should you have been underscoring? should he have been underscoring? should we have been underscoring? should you have been underscoring? should they have been underscoring?

Interro-negative form

Simple form	V-ing form
shouldn't I underscore? shouldn't you underscore? shouldn't he underscore? shouldn't we underscore? shouldn't you underscore? shouldn't they underscore?	shouldn't I be underscoring? shouldn't you be underscoring? shouldn't he be underscoring? shouldn't we be underscoring? shouldn't you be underscoring? shouldn't they be underscoring?
Perfect	V-ing perfect
shouldn't I have underscored? shouldn't you have underscored? shouldn't he have underscored? shouldn't we have underscored? shouldn't you have underscored? shouldn't they have underscored?	shouldn't I have been underscoring? shouldn't you have been underscoring? shouldn't he have been underscoring? shouldn't we have been underscoring? shouldn't you have been underscoring? shouldn't they have been underscoring?