I may moo you may moo she may moo we may moo you may moo they may moo
V-ing form
I may be mooing you may be mooing she may be mooing we may be mooing you may be mooing they may be mooing
Perfect
I may have mooed you may have mooed she 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 she 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 she 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 she 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 she 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 she 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 she moo? may we moo? may you moo? may they moo?
V-ing form
may I be mooing? may you be mooing? may she be mooing? may we be mooing? may you be mooing? may they be mooing?
Perfect
may I have mooed? may you have mooed? may she 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 she 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 she 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 she 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 she 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 she have been mooing? mayn't we have been mooing? mayn't you have been mooing? mayn't they have been mooing?