English verb conjugation
SHOULD PREHARDEN

Regular verb: preharden - prehardened - prehardened

Affirmation

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

Negation

Simple form	V-ing form
I should not preharden you should not preharden he should not preharden we should not preharden you should not preharden they should not preharden	I should not be prehardening you should not be prehardening he should not be prehardening we should not be prehardening you should not be prehardening they should not be prehardening
Perfect	V-ing perfect
I should not have prehardened you should not have prehardened he should not have prehardened we should not have prehardened you should not have prehardened they should not have prehardened	I should not have been prehardening you should not have been prehardening he should not have been prehardening we should not have been prehardening you should not have been prehardening they should not have been prehardening

Interrogative form

Simple form	V-ing form
should I preharden? should you preharden? should he preharden? should we preharden? should you preharden? should they preharden?	should I be prehardening? should you be prehardening? should he 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 he 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 he 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
should I not preharden? should you not preharden? should he not preharden? should we not preharden? should you not preharden? should they not preharden?	should I not be prehardening? should you not be prehardening? should he not be prehardening? should we not be prehardening? should you not be prehardening? should they not be prehardening?
Perfect	V-ing perfect
should I not have prehardened? should you not have prehardened? should he not have prehardened? should we not have prehardened? should you not have prehardened? should they not have prehardened?	should I not have been prehardening? should you not have been prehardening? should he not have been prehardening? should we not have been prehardening? should you not have been prehardening? should they not have been prehardening?