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