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