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