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