I may shut you may shut he may shut we may shut you may shut they may shut
V-ing form
I may be shutting you may be shutting he may be shutting we may be shutting you may be shutting they may be shutting
Perfect
I may have shut you may have shut he may have shut we may have shut you may have shut they may have shut
V-ing perfect
I may have been shutting you may have been shutting he may have been shutting we may have been shutting you may have been shutting they may have been shutting
Negation
Simple form
I mayn't shut you mayn't shut he mayn't shut we mayn't shut you mayn't shut they mayn't shut
V-ing form
I mayn't be shutting you mayn't be shutting he mayn't be shutting we mayn't be shutting you mayn't be shutting they mayn't be shutting
Perfect
I mayn't have shut you mayn't have shut he mayn't have shut we mayn't have shut you mayn't have shut they mayn't have shut
V-ing perfect
I mayn't have been shutting you mayn't have been shutting he mayn't have been shutting we mayn't have been shutting you mayn't have been shutting they mayn't have been shutting
Interrogative form
Simple form
may I shut? may you shut? may he shut? may we shut? may you shut? may they shut?
V-ing form
may I be shutting? may you be shutting? may he be shutting? may we be shutting? may you be shutting? may they be shutting?
Perfect
may I have shut? may you have shut? may he have shut? may we have shut? may you have shut? may they have shut?
V-ing perfect
may I have been shutting? may you have been shutting? may he have been shutting? may we have been shutting? may you have been shutting? may they have been shutting?
Interro-negative form
Simple form
mayn't I shut? mayn't you shut? mayn't he shut? mayn't we shut? mayn't you shut? mayn't they shut?
V-ing form
mayn't I be shutting? mayn't you be shutting? mayn't he be shutting? mayn't we be shutting? mayn't you be shutting? mayn't they be shutting?
Perfect
mayn't I have shut? mayn't you have shut? mayn't he have shut? mayn't we have shut? mayn't you have shut? mayn't they have shut?
V-ing perfect
mayn't I have been shutting? mayn't you have been shutting? mayn't he have been shutting? mayn't we have been shutting? mayn't you have been shutting? mayn't they have been shutting?