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