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