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