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