I should fire you should fire she should fire we should fire you should fire they should fire
V-ing form
I should be firing you should be firing she should be firing we should be firing you should be firing they should be firing
Perfect
I should have fired you should have fired she should have fired we should have fired you should have fired they should have fired
V-ing perfect
I should have been firing you should have been firing she should have been firing we should have been firing you should have been firing they should have been firing
Negation
Simple form
I should not fire you should not fire she should not fire we should not fire you should not fire they should not fire
V-ing form
I should not be firing you should not be firing she should not be firing we should not be firing you should not be firing they should not be firing
Perfect
I should not have fired you should not have fired she should not have fired we should not have fired you should not have fired they should not have fired
V-ing perfect
I should not have been firing you should not have been firing she should not have been firing we should not have been firing you should not have been firing they should not have been firing
Interrogative form
Simple form
should I fire? should you fire? should she fire? should we fire? should you fire? should they fire?
V-ing form
should I be firing? should you be firing? should she be firing? should we be firing? should you be firing? should they be firing?
Perfect
should I have fired? should you have fired? should she have fired? should we have fired? should you have fired? should they have fired?
V-ing perfect
should I have been firing? should you have been firing? should she have been firing? should we have been firing? should you have been firing? should they have been firing?
Interro-negative form
Simple form
should I not fire? should you not fire? should she not fire? should we not fire? should you not fire? should they not fire?
V-ing form
should I not be firing? should you not be firing? should she not be firing? should we not be firing? should you not be firing? should they not be firing?
Perfect
should I not have fired? should you not have fired? should she not have fired? should we not have fired? should you not have fired? should they not have fired?
V-ing perfect
should I not have been firing? should you not have been firing? should she not have been firing? should we not have been firing? should you not have been firing? should they not have been firing?