I may shorten you may shorten she may shorten we may shorten you may shorten they may shorten
V-ing form
I may be shortening you may be shortening she may be shortening we may be shortening you may be shortening they may be shortening
Perfect
I may have shortened you may have shortened she may have shortened we may have shortened you may have shortened they may have shortened
V-ing perfect
I may have been shortening you may have been shortening she may have been shortening we may have been shortening you may have been shortening they may have been shortening
Negation
Simple form
I mayn't shorten you mayn't shorten she mayn't shorten we mayn't shorten you mayn't shorten they mayn't shorten
V-ing form
I mayn't be shortening you mayn't be shortening she mayn't be shortening we mayn't be shortening you mayn't be shortening they mayn't be shortening
Perfect
I mayn't have shortened you mayn't have shortened she mayn't have shortened we mayn't have shortened you mayn't have shortened they mayn't have shortened
V-ing perfect
I mayn't have been shortening you mayn't have been shortening she mayn't have been shortening we mayn't have been shortening you mayn't have been shortening they mayn't have been shortening
Interrogative form
Simple form
may I shorten? may you shorten? may she shorten? may we shorten? may you shorten? may they shorten?
V-ing form
may I be shortening? may you be shortening? may she be shortening? may we be shortening? may you be shortening? may they be shortening?
Perfect
may I have shortened? may you have shortened? may she have shortened? may we have shortened? may you have shortened? may they have shortened?
V-ing perfect
may I have been shortening? may you have been shortening? may she have been shortening? may we have been shortening? may you have been shortening? may they have been shortening?
Interro-negative form
Simple form
mayn't I shorten? mayn't you shorten? mayn't she shorten? mayn't we shorten? mayn't you shorten? mayn't they shorten?
V-ing form
mayn't I be shortening? mayn't you be shortening? mayn't she be shortening? mayn't we be shortening? mayn't you be shortening? mayn't they be shortening?
Perfect
mayn't I have shortened? mayn't you have shortened? mayn't she have shortened? mayn't we have shortened? mayn't you have shortened? mayn't they have shortened?
V-ing perfect
mayn't I have been shortening? mayn't you have been shortening? mayn't she have been shortening? mayn't we have been shortening? mayn't you have been shortening? mayn't they have been shortening?