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