I'd be polishing you'd be polishing she'd be polishing we'd be polishing you'd be polishing they'd be polishing
Perfect
I should've polished you should've polished she should've polished we should've polished you should've polished they should've polished
V-ing perfect
I should've been polishing you should've been polishing she should've been polishing we should've been polishing you should've been polishing they should've been polishing
Negation
Simple form
I shouldn't polish you shouldn't polish she shouldn't polish we shouldn't polish you shouldn't polish they shouldn't polish
V-ing form
I shouldn't be polishing you shouldn't be polishing she shouldn't be polishing we shouldn't be polishing you shouldn't be polishing they shouldn't be polishing
Perfect
I shouldn't have polished you shouldn't have polished she shouldn't have polished we shouldn't have polished you shouldn't have polished they shouldn't have polished
V-ing perfect
I shouldn't have been polishing you shouldn't have been polishing she shouldn't have been polishing we shouldn't have been polishing you shouldn't have been polishing they shouldn't have been polishing
Interrogative form
Simple form
should I polish? should you polish? should she polish? should we polish? should you polish? should they polish?
V-ing form
should I be polishing? should you be polishing? should she be polishing? should we be polishing? should you be polishing? should they be polishing?
Perfect
should I have polished? should you have polished? should she have polished? should we have polished? should you have polished? should they have polished?
V-ing perfect
should I have been polishing? should you have been polishing? should she have been polishing? should we have been polishing? should you have been polishing? should they have been polishing?
Interro-negative form
Simple form
shouldn't I polish? shouldn't you polish? shouldn't she polish? shouldn't we polish? shouldn't you polish? shouldn't they polish?
V-ing form
shouldn't I be polishing? shouldn't you be polishing? shouldn't she be polishing? shouldn't we be polishing? shouldn't you be polishing? shouldn't they be polishing?
Perfect
shouldn't I have polished? shouldn't you have polished? shouldn't she have polished? shouldn't we have polished? shouldn't you have polished? shouldn't they have polished?
V-ing perfect
shouldn't I have been polishing? shouldn't you have been polishing? shouldn't she have been polishing? shouldn't we have been polishing? shouldn't you have been polishing? shouldn't they have been polishing?