English verb conjugation
MAY SMOKE

Regular verb: smoke - smoked - smoked

Affirmation

Simple form	V-ing form
I may smoke you may smoke he may smoke we may smoke you may smoke they may smoke	I may be smoking you may be smoking he may be smoking we may be smoking you may be smoking they may be smoking
Perfect	V-ing perfect
I may have smoked you may have smoked he may have smoked we may have smoked you may have smoked they may have smoked	I may have been smoking you may have been smoking he may have been smoking we may have been smoking you may have been smoking they may have been smoking

Negation

Simple form	V-ing form
I mayn't smoke you mayn't smoke he mayn't smoke we mayn't smoke you mayn't smoke they mayn't smoke	I mayn't be smoking you mayn't be smoking he mayn't be smoking we mayn't be smoking you mayn't be smoking they mayn't be smoking
Perfect	V-ing perfect
I mayn't have smoked you mayn't have smoked he mayn't have smoked we mayn't have smoked you mayn't have smoked they mayn't have smoked	I mayn't have been smoking you mayn't have been smoking he mayn't have been smoking we mayn't have been smoking you mayn't have been smoking they mayn't have been smoking

Interrogative form

Simple form	V-ing form
may I smoke? may you smoke? may he smoke? may we smoke? may you smoke? may they smoke?	may I be smoking? may you be smoking? may he be smoking? may we be smoking? may you be smoking? may they be smoking?
Perfect	V-ing perfect
may I have smoked? may you have smoked? may he have smoked? may we have smoked? may you have smoked? may they have smoked?	may I have been smoking? may you have been smoking? may he have been smoking? may we have been smoking? may you have been smoking? may they have been smoking?

Interro-negative form

Simple form	V-ing form
mayn't I smoke? mayn't you smoke? mayn't he smoke? mayn't we smoke? mayn't you smoke? mayn't they smoke?	mayn't I be smoking? mayn't you be smoking? mayn't he be smoking? mayn't we be smoking? mayn't you be smoking? mayn't they be smoking?
Perfect	V-ing perfect
mayn't I have smoked? mayn't you have smoked? mayn't he have smoked? mayn't we have smoked? mayn't you have smoked? mayn't they have smoked?	mayn't I have been smoking? mayn't you have been smoking? mayn't he have been smoking? mayn't we have been smoking? mayn't you have been smoking? mayn't they have been smoking?