I'd flag you'd flag she'd flag we'd flag you'd flag they'd flag
V-ing form
I'd be flagging you'd be flagging she'd be flagging we'd be flagging you'd be flagging they'd be flagging
Perfect
I should've flagged you should've flagged she 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 she 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 she 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 she 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 she 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 she 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 she flag? should we flag? should you flag? should they flag?
V-ing form
should I be flagging? should you be flagging? should she be flagging? should we be flagging? should you be flagging? should they be flagging?
Perfect
should I have flagged? should you have flagged? should she 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 she 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 she 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 she 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 she 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 she have been flagging? shouldn't we have been flagging? shouldn't you have been flagging? shouldn't they have been flagging?