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 may not swell you may not swell he may not swell we may not swell you may not swell they may not swell
V-ing form
I may not be swelling you may not be swelling he may not be swelling we may not be swelling you may not be swelling they may not be swelling
Perfect
I may not have swelled, swollen you may not have swelled, swollen he may not have swelled, swollen we may not have swelled, swollen you may not have swelled, swollen they may not have swelled, swollen
V-ing perfect
I may not have been swelling you may not have been swelling he may not have been swelling we may not have been swelling you may not have been swelling they may not 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
may I not swell? may you not swell? may he not swell? may we not swell? may you not swell? may they not swell?
V-ing form
may I not be swelling? may you not be swelling? may he not be swelling? may we not be swelling? may you not be swelling? may they not be swelling?
Perfect
may I not have swelled, swollen? may you not have swelled, swollen? may he not have swelled, swollen? may we not have swelled, swollen? may you not have swelled, swollen? may they not have swelled, swollen?
V-ing perfect
may I not have been swelling? may you not have been swelling? may he not have been swelling? may we not have been swelling? may you not have been swelling? may they not have been swelling?