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