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