English verb conjugation
SHOULD DECIDE

Regular verb: decide - decided - decided

Affirmation

Simple form	V-ing form
I'd decide you'd decide he'd decide we'd decide you'd decide they'd decide	I'd be deciding you'd be deciding he'd be deciding we'd be deciding you'd be deciding they'd be deciding
Perfect	V-ing perfect
I should've decided you should've decided he should've decided we should've decided you should've decided they should've decided	I should've been deciding you should've been deciding he should've been deciding we should've been deciding you should've been deciding they should've been deciding

Negation

Simple form	V-ing form
I shouldn't decide you shouldn't decide he shouldn't decide we shouldn't decide you shouldn't decide they shouldn't decide	I shouldn't be deciding you shouldn't be deciding he shouldn't be deciding we shouldn't be deciding you shouldn't be deciding they shouldn't be deciding
Perfect	V-ing perfect
I shouldn't have decided you shouldn't have decided he shouldn't have decided we shouldn't have decided you shouldn't have decided they shouldn't have decided	I shouldn't have been deciding you shouldn't have been deciding he shouldn't have been deciding we shouldn't have been deciding you shouldn't have been deciding they shouldn't have been deciding

Interrogative form

Simple form	V-ing form
should I decide? should you decide? should he decide? should we decide? should you decide? should they decide?	should I be deciding? should you be deciding? should he be deciding? should we be deciding? should you be deciding? should they be deciding?
Perfect	V-ing perfect
should I have decided? should you have decided? should he have decided? should we have decided? should you have decided? should they have decided?	should I have been deciding? should you have been deciding? should he have been deciding? should we have been deciding? should you have been deciding? should they have been deciding?

Interro-negative form

Simple form	V-ing form
shouldn't I decide? shouldn't you decide? shouldn't he decide? shouldn't we decide? shouldn't you decide? shouldn't they decide?	shouldn't I be deciding? shouldn't you be deciding? shouldn't he be deciding? shouldn't we be deciding? shouldn't you be deciding? shouldn't they be deciding?
Perfect	V-ing perfect
shouldn't I have decided? shouldn't you have decided? shouldn't he have decided? shouldn't we have decided? shouldn't you have decided? shouldn't they have decided?	shouldn't I have been deciding? shouldn't you have been deciding? shouldn't he have been deciding? shouldn't we have been deciding? shouldn't you have been deciding? shouldn't they have been deciding?