English verb conjugation
SHOULD SMARTEN

Regular verb: smarten - smartened - smartened

Affirmation

Simple form	V-ing form
I'd smarten you'd smarten he'd smarten we'd smarten you'd smarten they'd smarten	I'd be smartening you'd be smartening he'd be smartening we'd be smartening you'd be smartening they'd be smartening
Perfect	V-ing perfect
I should've smartened you should've smartened he should've smartened we should've smartened you should've smartened they should've smartened	I should've been smartening you should've been smartening he should've been smartening we should've been smartening you should've been smartening they should've been smartening

Negation

Simple form	V-ing form
I shouldn't smarten you shouldn't smarten he shouldn't smarten we shouldn't smarten you shouldn't smarten they shouldn't smarten	I shouldn't be smartening you shouldn't be smartening he shouldn't be smartening we shouldn't be smartening you shouldn't be smartening they shouldn't be smartening
Perfect	V-ing perfect
I shouldn't have smartened you shouldn't have smartened he shouldn't have smartened we shouldn't have smartened you shouldn't have smartened they shouldn't have smartened	I shouldn't have been smartening you shouldn't have been smartening he shouldn't have been smartening we shouldn't have been smartening you shouldn't have been smartening they shouldn't have been smartening

Interrogative form

Simple form	V-ing form
should I smarten? should you smarten? should he smarten? should we smarten? should you smarten? should they smarten?	should I be smartening? should you be smartening? should he be smartening? should we be smartening? should you be smartening? should they be smartening?
Perfect	V-ing perfect
should I have smartened? should you have smartened? should he have smartened? should we have smartened? should you have smartened? should they have smartened?	should I have been smartening? should you have been smartening? should he have been smartening? should we have been smartening? should you have been smartening? should they have been smartening?

Interro-negative form

Simple form	V-ing form
shouldn't I smarten? shouldn't you smarten? shouldn't he smarten? shouldn't we smarten? shouldn't you smarten? shouldn't they smarten?	shouldn't I be smartening? shouldn't you be smartening? shouldn't he be smartening? shouldn't we be smartening? shouldn't you be smartening? shouldn't they be smartening?
Perfect	V-ing perfect
shouldn't I have smartened? shouldn't you have smartened? shouldn't he have smartened? shouldn't we have smartened? shouldn't you have smartened? shouldn't they have smartened?	shouldn't I have been smartening? shouldn't you have been smartening? shouldn't he have been smartening? shouldn't we have been smartening? shouldn't you have been smartening? shouldn't they have been smartening?