I may launch you may launch she may launch we may launch you may launch they may launch
V-ing form
I may be launching you may be launching she may be launching we may be launching you may be launching they may be launching
Perfect
I may have launched you may have launched she may have launched we may have launched you may have launched they may have launched
V-ing perfect
I may have been launching you may have been launching she may have been launching we may have been launching you may have been launching they may have been launching
Negation
Simple form
I mayn't launch you mayn't launch she mayn't launch we mayn't launch you mayn't launch they mayn't launch
V-ing form
I mayn't be launching you mayn't be launching she mayn't be launching we mayn't be launching you mayn't be launching they mayn't be launching
Perfect
I mayn't have launched you mayn't have launched she mayn't have launched we mayn't have launched you mayn't have launched they mayn't have launched
V-ing perfect
I mayn't have been launching you mayn't have been launching she mayn't have been launching we mayn't have been launching you mayn't have been launching they mayn't have been launching
Interrogative form
Simple form
may I launch? may you launch? may she launch? may we launch? may you launch? may they launch?
V-ing form
may I be launching? may you be launching? may she be launching? may we be launching? may you be launching? may they be launching?
Perfect
may I have launched? may you have launched? may she have launched? may we have launched? may you have launched? may they have launched?
V-ing perfect
may I have been launching? may you have been launching? may she have been launching? may we have been launching? may you have been launching? may they have been launching?
Interro-negative form
Simple form
mayn't I launch? mayn't you launch? mayn't she launch? mayn't we launch? mayn't you launch? mayn't they launch?
V-ing form
mayn't I be launching? mayn't you be launching? mayn't she be launching? mayn't we be launching? mayn't you be launching? mayn't they be launching?
Perfect
mayn't I have launched? mayn't you have launched? mayn't she have launched? mayn't we have launched? mayn't you have launched? mayn't they have launched?
V-ing perfect
mayn't I have been launching? mayn't you have been launching? mayn't she have been launching? mayn't we have been launching? mayn't you have been launching? mayn't they have been launching?