I may swell you may swell he may swell we may swell you may swell they may swell
V-ing form
I may be swelling you may be swelling he may be swelling we may be swelling you may be swelling they may be swelling
Perfect
I may have swelled, swollen you may have swelled, swollen he may have swelled, swollen we may have swelled, swollen you may have swelled, swollen they may have swelled, swollen
V-ing perfect
I may have been swelling you may have been swelling he may have been swelling we may have been swelling you may have been swelling they may have been swelling
Negation
Simple form
I mayn't swell you mayn't swell he mayn't swell we mayn't swell you mayn't swell they mayn't swell
V-ing form
I mayn't be swelling you mayn't be swelling he mayn't be swelling we mayn't be swelling you mayn't be swelling they mayn't be swelling
Perfect
I mayn't have swelled, swollen you mayn't have swelled, swollen he mayn't have swelled, swollen we mayn't have swelled, swollen you mayn't have swelled, swollen they mayn't have swelled, swollen
V-ing perfect
I mayn't have been swelling you mayn't have been swelling he mayn't have been swelling we mayn't have been swelling you mayn't have been swelling they mayn't have been swelling
Interrogative form
Simple form
may I swell? may you swell? may he swell? may we swell? may you swell? may they swell?
V-ing form
may I be swelling? may you be swelling? may he be swelling? may we be swelling? may you be swelling? may they be swelling?
Perfect
may I have swelled, swollen? may you have swelled, swollen? may he have swelled, swollen? may we have swelled, swollen? may you have swelled, swollen? may they have swelled, swollen?
V-ing perfect
may I have been swelling? may you have been swelling? may he have been swelling? may we have been swelling? may you have been swelling? may they have been swelling?
Interro-negative form
Simple form
mayn't I swell? mayn't you swell? mayn't he swell? mayn't we swell? mayn't you swell? mayn't they swell?
V-ing form
mayn't I be swelling? mayn't you be swelling? mayn't he be swelling? mayn't we be swelling? mayn't you be swelling? mayn't they be swelling?
Perfect
mayn't I have swelled, swollen? mayn't you have swelled, swollen? mayn't he have swelled, swollen? mayn't we have swelled, swollen? mayn't you have swelled, swollen? mayn't they have swelled, swollen?
V-ing perfect
mayn't I have been swelling? mayn't you have been swelling? mayn't he have been swelling? mayn't we have been swelling? mayn't you have been swelling? mayn't they have been swelling?