English verb conjugation
SHOULD CENTER

Regular verb: center - centered - centered

Affirmation

Simple form	V-ing form
I'd center you'd center he'd center we'd center you'd center they'd center	I'd be centering you'd be centering he'd be centering we'd be centering you'd be centering they'd be centering
Perfect	V-ing perfect
I should've centered you should've centered he should've centered we should've centered you should've centered they should've centered	I should've been centering you should've been centering he should've been centering we should've been centering you should've been centering they should've been centering

Negation

Simple form	V-ing form
I shouldn't center you shouldn't center he shouldn't center we shouldn't center you shouldn't center they shouldn't center	I shouldn't be centering you shouldn't be centering he shouldn't be centering we shouldn't be centering you shouldn't be centering they shouldn't be centering
Perfect	V-ing perfect
I shouldn't have centered you shouldn't have centered he shouldn't have centered we shouldn't have centered you shouldn't have centered they shouldn't have centered	I shouldn't have been centering you shouldn't have been centering he shouldn't have been centering we shouldn't have been centering you shouldn't have been centering they shouldn't have been centering

Interrogative form

Simple form	V-ing form
should I center? should you center? should he center? should we center? should you center? should they center?	should I be centering? should you be centering? should he be centering? should we be centering? should you be centering? should they be centering?
Perfect	V-ing perfect
should I have centered? should you have centered? should he have centered? should we have centered? should you have centered? should they have centered?	should I have been centering? should you have been centering? should he have been centering? should we have been centering? should you have been centering? should they have been centering?

Interro-negative form

Simple form	V-ing form
shouldn't I center? shouldn't you center? shouldn't he center? shouldn't we center? shouldn't you center? shouldn't they center?	shouldn't I be centering? shouldn't you be centering? shouldn't he be centering? shouldn't we be centering? shouldn't you be centering? shouldn't they be centering?
Perfect	V-ing perfect
shouldn't I have centered? shouldn't you have centered? shouldn't he have centered? shouldn't we have centered? shouldn't you have centered? shouldn't they have centered?	shouldn't I have been centering? shouldn't you have been centering? shouldn't he have been centering? shouldn't we have been centering? shouldn't you have been centering? shouldn't they have been centering?