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I should've superseded you should've superseded he should've superseded we should've superseded you should've superseded they should've superseded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I shouldn't have superseded you shouldn't have superseded he shouldn't have superseded we shouldn't have superseded you shouldn't have superseded they shouldn't have superseded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should I have superseded? should you have superseded? should he have superseded? should we have superseded? should you have superseded? should they have superseded?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shouldn't I have superseded? shouldn't you have superseded? shouldn't he have superseded? shouldn't we have superseded? shouldn't you have superseded? shouldn't they have superseded?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