I should butt you should butt she should butt we should butt you should butt they should butt
V-ing form
I should be butting you should be butting she should be butting we should be butting you should be butting they should be butting
Perfect
I should have butted you should have butted she should have butted we should have butted you should have butted they should have butted
V-ing perfect
I should have been butting you should have been butting she should have been butting we should have been butting you should have been butting they should have been butting
Negation
Simple form
I should not butt you should not butt she should not butt we should not butt you should not butt they should not butt
V-ing form
I should not be butting you should not be butting she should not be butting we should not be butting you should not be butting they should not be butting
Perfect
I should not have butted you should not have butted she should not have butted we should not have butted you should not have butted they should not have butted
V-ing perfect
I should not have been butting you should not have been butting she should not have been butting we should not have been butting you should not have been butting they should not have been butting
Interrogative form
Simple form
should I butt? should you butt? should she butt? should we butt? should you butt? should they butt?
V-ing form
should I be butting? should you be butting? should she be butting? should we be butting? should you be butting? should they be butting?
Perfect
should I have butted? should you have butted? should she 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 she have been butting? should we have been butting? should you have been butting? should they have been butting?
Interro-negative form
Simple form
should I not butt? should you not butt? should she not butt? should we not butt? should you not butt? should they not butt?
V-ing form
should I not be butting? should you not be butting? should she not be butting? should we not be butting? should you not be butting? should they not be butting?
Perfect
should I not have butted? should you not have butted? should she not have butted? should we not have butted? should you not have butted? should they not have butted?
V-ing perfect
should I not have been butting? should you not have been butting? should she not have been butting? should we not have been butting? should you not have been butting? should they not have been butting?