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 may not coal you may not coal he may not coal we may not coal you may not coal they may not coal
V-ing form
I may not be coaling you may not be coaling he may not be coaling we may not be coaling you may not be coaling they may not be coaling
Perfect
I may not have coaled you may not have coaled he may not have coaled we may not have coaled you may not have coaled they may not have coaled
V-ing perfect
I may not have been coaling you may not have been coaling he may not have been coaling we may not have been coaling you may not have been coaling they may not 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
may I not coal? may you not coal? may he not coal? may we not coal? may you not coal? may they not coal?
V-ing form
may I not be coaling? may you not be coaling? may he not be coaling? may we not be coaling? may you not be coaling? may they not be coaling?
Perfect
may I not have coaled? may you not have coaled? may he not have coaled? may we not have coaled? may you not have coaled? may they not have coaled?
V-ing perfect
may I not have been coaling? may you not have been coaling? may he not have been coaling? may we not have been coaling? may you not have been coaling? may they not have been coaling?