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