I should seat you should seat she should seat we should seat you should seat they should seat
V-ing form
I should be seating you should be seating she should be seating we should be seating you should be seating they should be seating
Perfect
I should have seated you should have seated she should have seated we should have seated you should have seated they should have seated
V-ing perfect
I should have been seating you should have been seating she should have been seating we should have been seating you should have been seating they should have been seating
Negation
Simple form
I should not seat you should not seat she should not seat we should not seat you should not seat they should not seat
V-ing form
I should not be seating you should not be seating she should not be seating we should not be seating you should not be seating they should not be seating
Perfect
I should not have seated you should not have seated she should not have seated we should not have seated you should not have seated they should not have seated
V-ing perfect
I should not have been seating you should not have been seating she should not have been seating we should not have been seating you should not have been seating they should not have been seating
Interrogative form
Simple form
should I seat? should you seat? should she seat? should we seat? should you seat? should they seat?
V-ing form
should I be seating? should you be seating? should she be seating? should we be seating? should you be seating? should they be seating?
Perfect
should I have seated? should you have seated? should she 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 she have been seating? should we have been seating? should you have been seating? should they have been seating?
Interro-negative form
Simple form
should I not seat? should you not seat? should she not seat? should we not seat? should you not seat? should they not seat?
V-ing form
should I not be seating? should you not be seating? should she not be seating? should we not be seating? should you not be seating? should they not be seating?
Perfect
should I not have seated? should you not have seated? should she not have seated? should we not have seated? should you not have seated? should they not have seated?
V-ing perfect
should I not have been seating? should you not have been seating? should she not have been seating? should we not have been seating? should you not have been seating? should they not have been seating?