I may coal you may coal she may coal we may coal you may coal they may coal
V-ing form
I may be coaling you may be coaling she may be coaling we may be coaling you may be coaling they may be coaling
Perfect
I may have coaled you may have coaled she 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 she 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 she 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 she 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 she 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 she 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 she coal? may we coal? may you coal? may they coal?
V-ing form
may I be coaling? may you be coaling? may she be coaling? may we be coaling? may you be coaling? may they be coaling?
Perfect
may I have coaled? may you have coaled? may she 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 she 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 she 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 she 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 she 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 she have been coaling? mayn't we have been coaling? mayn't you have been coaling? mayn't they have been coaling?