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
I should've decided you should've decided he should've decided we should've decided you should've decided they should've decided
V-ing perfect
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
I shouldn't decide you shouldn't decide he shouldn't decide we shouldn't decide you shouldn't decide they shouldn't decide
V-ing form
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
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
V-ing perfect
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
should I decide? should you decide? should he decide? should we decide? should you decide? should they decide?
V-ing form
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
should I have decided? should you have decided? should he have decided? should we have decided? should you have decided? should they have decided?
V-ing perfect
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
shouldn't I decide? shouldn't you decide? shouldn't he decide? shouldn't we decide? shouldn't you decide? shouldn't they decide?
V-ing form
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
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?
V-ing perfect
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?