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