I'd be narrowing you'd be narrowing he'd be narrowing we'd be narrowing you'd be narrowing they'd be narrowing
Perfect
I should've narrowed you should've narrowed he should've narrowed we should've narrowed you should've narrowed they should've narrowed
V-ing perfect
I should've been narrowing you should've been narrowing he should've been narrowing we should've been narrowing you should've been narrowing they should've been narrowing
Negation
Simple form
I shouldn't narrow you shouldn't narrow he shouldn't narrow we shouldn't narrow you shouldn't narrow they shouldn't narrow
V-ing form
I shouldn't be narrowing you shouldn't be narrowing he shouldn't be narrowing we shouldn't be narrowing you shouldn't be narrowing they shouldn't be narrowing
Perfect
I shouldn't have narrowed you shouldn't have narrowed he shouldn't have narrowed we shouldn't have narrowed you shouldn't have narrowed they shouldn't have narrowed
V-ing perfect
I shouldn't have been narrowing you shouldn't have been narrowing he shouldn't have been narrowing we shouldn't have been narrowing you shouldn't have been narrowing they shouldn't have been narrowing
Interrogative form
Simple form
should I narrow? should you narrow? should he narrow? should we narrow? should you narrow? should they narrow?
V-ing form
should I be narrowing? should you be narrowing? should he be narrowing? should we be narrowing? should you be narrowing? should they be narrowing?
Perfect
should I have narrowed? should you have narrowed? should he have narrowed? should we have narrowed? should you have narrowed? should they have narrowed?
V-ing perfect
should I have been narrowing? should you have been narrowing? should he have been narrowing? should we have been narrowing? should you have been narrowing? should they have been narrowing?
Interro-negative form
Simple form
shouldn't I narrow? shouldn't you narrow? shouldn't he narrow? shouldn't we narrow? shouldn't you narrow? shouldn't they narrow?
V-ing form
shouldn't I be narrowing? shouldn't you be narrowing? shouldn't he be narrowing? shouldn't we be narrowing? shouldn't you be narrowing? shouldn't they be narrowing?
Perfect
shouldn't I have narrowed? shouldn't you have narrowed? shouldn't he have narrowed? shouldn't we have narrowed? shouldn't you have narrowed? shouldn't they have narrowed?
V-ing perfect
shouldn't I have been narrowing? shouldn't you have been narrowing? shouldn't he have been narrowing? shouldn't we have been narrowing? shouldn't you have been narrowing? shouldn't they have been narrowing?