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