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 mayn't fall you mayn't fall he mayn't fall we mayn't fall you mayn't fall they mayn't fall
V-ing form
I mayn't be falling you mayn't be falling he mayn't be falling we mayn't be falling you mayn't be falling they mayn't be falling
Perfect
I mayn't have fallen you mayn't have fallen he mayn't have fallen we mayn't have fallen you mayn't have fallen they mayn't have fallen
V-ing perfect
I mayn't have been falling you mayn't have been falling he mayn't have been falling we mayn't have been falling you mayn't have been falling they mayn't 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
mayn't I fall? mayn't you fall? mayn't he fall? mayn't we fall? mayn't you fall? mayn't they fall?
V-ing form
mayn't I be falling? mayn't you be falling? mayn't he be falling? mayn't we be falling? mayn't you be falling? mayn't they be falling?
Perfect
mayn't I have fallen? mayn't you have fallen? mayn't he have fallen? mayn't we have fallen? mayn't you have fallen? mayn't they have fallen?
V-ing perfect
mayn't I have been falling? mayn't you have been falling? mayn't he have been falling? mayn't we have been falling? mayn't you have been falling? mayn't they have been falling?