English verb conjugation
SHOULD PREHARDEN

Regular verb: preharden - prehardened - prehardened

Affirmation

Simple form	V-ing form
I'd preharden you'd preharden she'd preharden we'd preharden you'd preharden they'd preharden	I'd be prehardening you'd be prehardening she'd be prehardening we'd be prehardening you'd be prehardening they'd be prehardening
Perfect	V-ing perfect
I should've prehardened you should've prehardened she should've prehardened we should've prehardened you should've prehardened they should've prehardened	I should've been prehardening you should've been prehardening she should've been prehardening we should've been prehardening you should've been prehardening they should've been prehardening

Negation

Simple form	V-ing form
I shouldn't preharden you shouldn't preharden she shouldn't preharden we shouldn't preharden you shouldn't preharden they shouldn't preharden	I shouldn't be prehardening you shouldn't be prehardening she shouldn't be prehardening we shouldn't be prehardening you shouldn't be prehardening they shouldn't be prehardening
Perfect	V-ing perfect
I shouldn't have prehardened you shouldn't have prehardened she shouldn't have prehardened we shouldn't have prehardened you shouldn't have prehardened they shouldn't have prehardened	I shouldn't have been prehardening you shouldn't have been prehardening she shouldn't have been prehardening we shouldn't have been prehardening you shouldn't have been prehardening they shouldn't have been prehardening

Interrogative form

Simple form	V-ing form
should I preharden? should you preharden? should she preharden? should we preharden? should you preharden? should they preharden?	should I be prehardening? should you be prehardening? should she be prehardening? should we be prehardening? should you be prehardening? should they be prehardening?
Perfect	V-ing perfect
should I have prehardened? should you have prehardened? should she have prehardened? should we have prehardened? should you have prehardened? should they have prehardened?	should I have been prehardening? should you have been prehardening? should she have been prehardening? should we have been prehardening? should you have been prehardening? should they have been prehardening?

Interro-negative form

Simple form	V-ing form
shouldn't I preharden? shouldn't you preharden? shouldn't she preharden? shouldn't we preharden? shouldn't you preharden? shouldn't they preharden?	shouldn't I be prehardening? shouldn't you be prehardening? shouldn't she be prehardening? shouldn't we be prehardening? shouldn't you be prehardening? shouldn't they be prehardening?
Perfect	V-ing perfect
shouldn't I have prehardened? shouldn't you have prehardened? shouldn't she have prehardened? shouldn't we have prehardened? shouldn't you have prehardened? shouldn't they have prehardened?	shouldn't I have been prehardening? shouldn't you have been prehardening? shouldn't she have been prehardening? shouldn't we have been prehardening? shouldn't you have been prehardening? shouldn't they have been prehardening?