I may butt you may butt she may butt we may butt you may butt they may butt
V-ing form
I may be butting you may be butting she may be butting we may be butting you may be butting they may be butting
Perfect
I may have butted you may have butted she may have butted we may have butted you may have butted they may have butted
V-ing perfect
I may have been butting you may have been butting she may have been butting we may have been butting you may have been butting they may have been butting
Negation
Simple form
I mayn't butt you mayn't butt she mayn't butt we mayn't butt you mayn't butt they mayn't butt
V-ing form
I mayn't be butting you mayn't be butting she mayn't be butting we mayn't be butting you mayn't be butting they mayn't be butting
Perfect
I mayn't have butted you mayn't have butted she mayn't have butted we mayn't have butted you mayn't have butted they mayn't have butted
V-ing perfect
I mayn't have been butting you mayn't have been butting she mayn't have been butting we mayn't have been butting you mayn't have been butting they mayn't have been butting
Interrogative form
Simple form
may I butt? may you butt? may she butt? may we butt? may you butt? may they butt?
V-ing form
may I be butting? may you be butting? may she be butting? may we be butting? may you be butting? may they be butting?
Perfect
may I have butted? may you have butted? may she have butted? may we have butted? may you have butted? may they have butted?
V-ing perfect
may I have been butting? may you have been butting? may she have been butting? may we have been butting? may you have been butting? may they have been butting?
Interro-negative form
Simple form
mayn't I butt? mayn't you butt? mayn't she butt? mayn't we butt? mayn't you butt? mayn't they butt?
V-ing form
mayn't I be butting? mayn't you be butting? mayn't she be butting? mayn't we be butting? mayn't you be butting? mayn't they be butting?
Perfect
mayn't I have butted? mayn't you have butted? mayn't she have butted? mayn't we have butted? mayn't you have butted? mayn't they have butted?
V-ing perfect
mayn't I have been butting? mayn't you have been butting? mayn't she have been butting? mayn't we have been butting? mayn't you have been butting? mayn't they have been butting?