I should joke you should joke she should joke we should joke you should joke they should joke
V-ing form
I should be joking you should be joking she should be joking we should be joking you should be joking they should be joking
Perfect
I should have joked you should have joked she should have joked we should have joked you should have joked they should have joked
V-ing perfect
I should have been joking you should have been joking she should have been joking we should have been joking you should have been joking they should have been joking
Negation
Simple form
I should not joke you should not joke she should not joke we should not joke you should not joke they should not joke
V-ing form
I should not be joking you should not be joking she should not be joking we should not be joking you should not be joking they should not be joking
Perfect
I should not have joked you should not have joked she should not have joked we should not have joked you should not have joked they should not have joked
V-ing perfect
I should not have been joking you should not have been joking she should not have been joking we should not have been joking you should not have been joking they should not have been joking
Interrogative form
Simple form
should I joke? should you joke? should she joke? should we joke? should you joke? should they joke?
V-ing form
should I be joking? should you be joking? should she be joking? should we be joking? should you be joking? should they be joking?
Perfect
should I have joked? should you have joked? should she have joked? should we have joked? should you have joked? should they have joked?
V-ing perfect
should I have been joking? should you have been joking? should she have been joking? should we have been joking? should you have been joking? should they have been joking?
Interro-negative form
Simple form
should I not joke? should you not joke? should she not joke? should we not joke? should you not joke? should they not joke?
V-ing form
should I not be joking? should you not be joking? should she not be joking? should we not be joking? should you not be joking? should they not be joking?
Perfect
should I not have joked? should you not have joked? should she not have joked? should we not have joked? should you not have joked? should they not have joked?
V-ing perfect
should I not have been joking? should you not have been joking? should she not have been joking? should we not have been joking? should you not have been joking? should they not have been joking?