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