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