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