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