I'd be returning you'd be returning she'd be returning we'd be returning you'd be returning they'd be returning
Perfect
I should've returned you should've returned she 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 she 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 she 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 she 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 she 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 she 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 she return? should we return? should you return? should they return?
V-ing form
should I be returning? should you be returning? should she be returning? should we be returning? should you be returning? should they be returning?
Perfect
should I have returned? should you have returned? should she 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 she 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 she 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 she 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 she 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 she have been returning? shouldn't we have been returning? shouldn't you have been returning? shouldn't they have been returning?