I may fall you may fall he may fall we may fall you may fall they may fall
V-ing form
I may be falling you may be falling he may be falling we may be falling you may be falling they may be falling
Perfect
I may have fallen you may have fallen he may have fallen we may have fallen you may have fallen they may have fallen
V-ing perfect
I may have been falling you may have been falling he may have been falling we may have been falling you may have been falling they may have been falling
Negation
Simple form
I may not fall you may not fall he may not fall we may not fall you may not fall they may not fall
V-ing form
I may not be falling you may not be falling he may not be falling we may not be falling you may not be falling they may not be falling
Perfect
I may not have fallen you may not have fallen he may not have fallen we may not have fallen you may not have fallen they may not have fallen
V-ing perfect
I may not have been falling you may not have been falling he may not have been falling we may not have been falling you may not have been falling they may not have been falling
Interrogative form
Simple form
may I fall? may you fall? may he fall? may we fall? may you fall? may they fall?
V-ing form
may I be falling? may you be falling? may he be falling? may we be falling? may you be falling? may they be falling?
Perfect
may I have fallen? may you have fallen? may he have fallen? may we have fallen? may you have fallen? may they have fallen?
V-ing perfect
may I have been falling? may you have been falling? may he have been falling? may we have been falling? may you have been falling? may they have been falling?
Interro-negative form
Simple form
may I not fall? may you not fall? may he not fall? may we not fall? may you not fall? may they not fall?
V-ing form
may I not be falling? may you not be falling? may he not be falling? may we not be falling? may you not be falling? may they not be falling?
Perfect
may I not have fallen? may you not have fallen? may he not have fallen? may we not have fallen? may you not have fallen? may they not have fallen?
V-ing perfect
may I not have been falling? may you not have been falling? may he not have been falling? may we not have been falling? may you not have been falling? may they not have been falling?