I'd be vacillating you'd be vacillating she'd be vacillating we'd be vacillating you'd be vacillating they'd be vacillating
Perfect
I should've vacillated you should've vacillated she 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 she 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 she 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 she 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 she 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 she 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 she vacillate? should we vacillate? should you vacillate? should they vacillate?
V-ing form
should I be vacillating? should you be vacillating? should she be vacillating? should we be vacillating? should you be vacillating? should they be vacillating?
Perfect
should I have vacillated? should you have vacillated? should she 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 she 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 she 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 she 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 she 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 she have been vacillating? shouldn't we have been vacillating? shouldn't you have been vacillating? shouldn't they have been vacillating?