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