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