English verb conjugation
MUST MOO

Regular verb: moo - mooed - mooed

Affirmation

Simple form	V-ing form
I must moo you must moo he must moo we must moo you must moo they must moo	I must be mooing you must be mooing he must be mooing we must be mooing you must be mooing they must be mooing
Perfect	V-ing perfect
I must have mooed you must have mooed he must have mooed we must have mooed you must have mooed they must have mooed	I must have been mooing you must have been mooing he must have been mooing we must have been mooing you must have been mooing they must have been mooing

Negation

Simple form	V-ing form
I mustn't moo you mustn't moo he mustn't moo we mustn't moo you mustn't moo they mustn't moo	I mustn't be mooing you mustn't be mooing he mustn't be mooing we mustn't be mooing you mustn't be mooing they mustn't be mooing
Perfect	V-ing perfect
I mustn't have mooed you mustn't have mooed he mustn't have mooed we mustn't have mooed you mustn't have mooed they mustn't have mooed	I mustn't have been mooing you mustn't have been mooing he mustn't have been mooing we mustn't have been mooing you mustn't have been mooing they mustn't have been mooing

Interrogative form

Simple form	V-ing form
must I moo? must you moo? must he moo? must we moo? must you moo? must they moo?	must I be mooing? must you be mooing? must he be mooing? must we be mooing? must you be mooing? must they be mooing?
Perfect	V-ing perfect
must I have mooed? must you have mooed? must he have mooed? must we have mooed? must you have mooed? must they have mooed?	must I have been mooing? must you have been mooing? must he have been mooing? must we have been mooing? must you have been mooing? must they have been mooing?

Interro-negative form

Simple form	V-ing form
mustn't I moo? mustn't you moo? mustn't he moo? mustn't we moo? mustn't you moo? mustn't they moo?	mustn't I be mooing? mustn't you be mooing? mustn't he be mooing? mustn't we be mooing? mustn't you be mooing? mustn't they be mooing?
Perfect	V-ing perfect
mustn't I have mooed? mustn't you have mooed? mustn't he have mooed? mustn't we have mooed? mustn't you have mooed? mustn't they have mooed?	mustn't I have been mooing? mustn't you have been mooing? mustn't he have been mooing? mustn't we have been mooing? mustn't you have been mooing? mustn't they have been mooing?