Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I may fell fell you may fell fell he may fell fell we may fell fell you may fell fell they may fell fell
V-ing form
I may be fell felling you may be fell felling he may be fell felling we may be fell felling you may be fell felling they may be fell felling
Perfect
I may have fell felled you may have fell felled he may have fell felled we may have fell felled you may have fell felled they may have fell felled
V-ing perfect
I may have been fell felling you may have been fell felling he may have been fell felling we may have been fell felling you may have been fell felling they may have been fell felling
Negation
Simple form
I mayn't fell fell you mayn't fell fell he mayn't fell fell we mayn't fell fell you mayn't fell fell they mayn't fell fell
V-ing form
I mayn't be fell felling you mayn't be fell felling he mayn't be fell felling we mayn't be fell felling you mayn't be fell felling they mayn't be fell felling
Perfect
I mayn't have fell felled you mayn't have fell felled he mayn't have fell felled we mayn't have fell felled you mayn't have fell felled they mayn't have fell felled
V-ing perfect
I mayn't have been fell felling you mayn't have been fell felling he mayn't have been fell felling we mayn't have been fell felling you mayn't have been fell felling they mayn't have been fell felling
Interrogative form
Simple form
may I fell fell? may you fell fell? may he fell fell? may we fell fell? may you fell fell? may they fell fell?
V-ing form
may I be fell felling? may you be fell felling? may he be fell felling? may we be fell felling? may you be fell felling? may they be fell felling?
Perfect
may I have fell felled? may you have fell felled? may he have fell felled? may we have fell felled? may you have fell felled? may they have fell felled?
V-ing perfect
may I have been fell felling? may you have been fell felling? may he have been fell felling? may we have been fell felling? may you have been fell felling? may they have been fell felling?
Interro-negative form
Simple form
mayn't I fell fell? mayn't you fell fell? mayn't he fell fell? mayn't we fell fell? mayn't you fell fell? mayn't they fell fell?
V-ing form
mayn't I be fell felling? mayn't you be fell felling? mayn't he be fell felling? mayn't we be fell felling? mayn't you be fell felling? mayn't they be fell felling?
Perfect
mayn't I have fell felled? mayn't you have fell felled? mayn't he have fell felled? mayn't we have fell felled? mayn't you have fell felled? mayn't they have fell felled?
V-ing perfect
mayn't I have been fell felling? mayn't you have been fell felling? mayn't he have been fell felling? mayn't we have been fell felling? mayn't you have been fell felling? mayn't they have been fell felling?