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