English verb conjugation
MAY PUFF

Regular verb: puff - puffed - puffed

Affirmation

Simple form	V-ing form
I may puff you may puff he may puff we may puff you may puff they may puff	I may be puffing you may be puffing he may be puffing we may be puffing you may be puffing they may be puffing
Perfect	V-ing perfect
I may have puffed you may have puffed he may have puffed we may have puffed you may have puffed they may have puffed	I may have been puffing you may have been puffing he may have been puffing we may have been puffing you may have been puffing they may have been puffing

Negation

Simple form	V-ing form
I mayn't puff you mayn't puff he mayn't puff we mayn't puff you mayn't puff they mayn't puff	I mayn't be puffing you mayn't be puffing he mayn't be puffing we mayn't be puffing you mayn't be puffing they mayn't be puffing
Perfect	V-ing perfect
I mayn't have puffed you mayn't have puffed he mayn't have puffed we mayn't have puffed you mayn't have puffed they mayn't have puffed	I mayn't have been puffing you mayn't have been puffing he mayn't have been puffing we mayn't have been puffing you mayn't have been puffing they mayn't have been puffing

Interrogative form

Simple form	V-ing form
may I puff? may you puff? may he puff? may we puff? may you puff? may they puff?	may I be puffing? may you be puffing? may he be puffing? may we be puffing? may you be puffing? may they be puffing?
Perfect	V-ing perfect
may I have puffed? may you have puffed? may he have puffed? may we have puffed? may you have puffed? may they have puffed?	may I have been puffing? may you have been puffing? may he have been puffing? may we have been puffing? may you have been puffing? may they have been puffing?

Interro-negative form

Simple form	V-ing form
mayn't I puff? mayn't you puff? mayn't he puff? mayn't we puff? mayn't you puff? mayn't they puff?	mayn't I be puffing? mayn't you be puffing? mayn't he be puffing? mayn't we be puffing? mayn't you be puffing? mayn't they be puffing?
Perfect	V-ing perfect
mayn't I have puffed? mayn't you have puffed? mayn't he have puffed? mayn't we have puffed? mayn't you have puffed? mayn't they have puffed?	mayn't I have been puffing? mayn't you have been puffing? mayn't he have been puffing? mayn't we have been puffing? mayn't you have been puffing? mayn't they have been puffing?