Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I may fall. stumbel you may fall. stumbel he may fall. stumbel we may fall. stumbel you may fall. stumbel they may fall. stumbel
V-ing form
I may be fall. stumbeling you may be fall. stumbeling he may be fall. stumbeling we may be fall. stumbeling you may be fall. stumbeling they may be fall. stumbeling
Perfect
I may have fall. stumbeled you may have fall. stumbeled he may have fall. stumbeled we may have fall. stumbeled you may have fall. stumbeled they may have fall. stumbeled
V-ing perfect
I may have been fall. stumbeling you may have been fall. stumbeling he may have been fall. stumbeling we may have been fall. stumbeling you may have been fall. stumbeling they may have been fall. stumbeling
Negation
Simple form
I may not fall. stumbel you may not fall. stumbel he may not fall. stumbel we may not fall. stumbel you may not fall. stumbel they may not fall. stumbel
V-ing form
I may not be fall. stumbeling you may not be fall. stumbeling he may not be fall. stumbeling we may not be fall. stumbeling you may not be fall. stumbeling they may not be fall. stumbeling
Perfect
I may not have fall. stumbeled you may not have fall. stumbeled he may not have fall. stumbeled we may not have fall. stumbeled you may not have fall. stumbeled they may not have fall. stumbeled
V-ing perfect
I may not have been fall. stumbeling you may not have been fall. stumbeling he may not have been fall. stumbeling we may not have been fall. stumbeling you may not have been fall. stumbeling they may not have been fall. stumbeling
Interrogative form
Simple form
may I fall. stumbel? may you fall. stumbel? may he fall. stumbel? may we fall. stumbel? may you fall. stumbel? may they fall. stumbel?
V-ing form
may I be fall. stumbeling? may you be fall. stumbeling? may he be fall. stumbeling? may we be fall. stumbeling? may you be fall. stumbeling? may they be fall. stumbeling?
Perfect
may I have fall. stumbeled? may you have fall. stumbeled? may he have fall. stumbeled? may we have fall. stumbeled? may you have fall. stumbeled? may they have fall. stumbeled?
V-ing perfect
may I have been fall. stumbeling? may you have been fall. stumbeling? may he have been fall. stumbeling? may we have been fall. stumbeling? may you have been fall. stumbeling? may they have been fall. stumbeling?
Interro-negative form
Simple form
may I not fall. stumbel? may you not fall. stumbel? may he not fall. stumbel? may we not fall. stumbel? may you not fall. stumbel? may they not fall. stumbel?
V-ing form
may I not be fall. stumbeling? may you not be fall. stumbeling? may he not be fall. stumbeling? may we not be fall. stumbeling? may you not be fall. stumbeling? may they not be fall. stumbeling?
Perfect
may I not have fall. stumbeled? may you not have fall. stumbeled? may he not have fall. stumbeled? may we not have fall. stumbeled? may you not have fall. stumbeled? may they not have fall. stumbeled?
V-ing perfect
may I not have been fall. stumbeling? may you not have been fall. stumbeling? may he not have been fall. stumbeling? may we not have been fall. stumbeling? may you not have been fall. stumbeling? may they not have been fall. stumbeling?