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