English verb conjugation
MAY VAIL

Regular verb: vail - vailed - vailed

Affirmation

Simple form	V-ing form
I may vail you may vail he may vail we may vail you may vail they may vail	I may be vailing you may be vailing he may be vailing we may be vailing you may be vailing they may be vailing
Perfect	V-ing perfect
I may have vailed you may have vailed he may have vailed we may have vailed you may have vailed they may have vailed	I may have been vailing you may have been vailing he may have been vailing we may have been vailing you may have been vailing they may have been vailing

Negation

Simple form	V-ing form
I mayn't vail you mayn't vail he mayn't vail we mayn't vail you mayn't vail they mayn't vail	I mayn't be vailing you mayn't be vailing he mayn't be vailing we mayn't be vailing you mayn't be vailing they mayn't be vailing
Perfect	V-ing perfect
I mayn't have vailed you mayn't have vailed he mayn't have vailed we mayn't have vailed you mayn't have vailed they mayn't have vailed	I mayn't have been vailing you mayn't have been vailing he mayn't have been vailing we mayn't have been vailing you mayn't have been vailing they mayn't have been vailing

Interrogative form

Simple form	V-ing form
may I vail? may you vail? may he vail? may we vail? may you vail? may they vail?	may I be vailing? may you be vailing? may he be vailing? may we be vailing? may you be vailing? may they be vailing?
Perfect	V-ing perfect
may I have vailed? may you have vailed? may he have vailed? may we have vailed? may you have vailed? may they have vailed?	may I have been vailing? may you have been vailing? may he have been vailing? may we have been vailing? may you have been vailing? may they have been vailing?

Interro-negative form

Simple form	V-ing form
mayn't I vail? mayn't you vail? mayn't he vail? mayn't we vail? mayn't you vail? mayn't they vail?	mayn't I be vailing? mayn't you be vailing? mayn't he be vailing? mayn't we be vailing? mayn't you be vailing? mayn't they be vailing?
Perfect	V-ing perfect
mayn't I have vailed? mayn't you have vailed? mayn't he have vailed? mayn't we have vailed? mayn't you have vailed? mayn't they have vailed?	mayn't I have been vailing? mayn't you have been vailing? mayn't he have been vailing? mayn't we have been vailing? mayn't you have been vailing? mayn't they have been vailing?