English verb conjugation
MUST CATNAP

Regular verb: catnap - catnapped - catnapped

Affirmation

Simple form	V-ing form
I must catnap you must catnap he must catnap we must catnap you must catnap they must catnap	I must be catnapping you must be catnapping he must be catnapping we must be catnapping you must be catnapping they must be catnapping
Perfect	V-ing perfect
I must have catnapped you must have catnapped he must have catnapped we must have catnapped you must have catnapped they must have catnapped	I must have been catnapping you must have been catnapping he must have been catnapping we must have been catnapping you must have been catnapping they must have been catnapping

Negation

Simple form	V-ing form
I mustn't catnap you mustn't catnap he mustn't catnap we mustn't catnap you mustn't catnap they mustn't catnap	I mustn't be catnapping you mustn't be catnapping he mustn't be catnapping we mustn't be catnapping you mustn't be catnapping they mustn't be catnapping
Perfect	V-ing perfect
I mustn't have catnapped you mustn't have catnapped he mustn't have catnapped we mustn't have catnapped you mustn't have catnapped they mustn't have catnapped	I mustn't have been catnapping you mustn't have been catnapping he mustn't have been catnapping we mustn't have been catnapping you mustn't have been catnapping they mustn't have been catnapping

Interrogative form

Simple form	V-ing form
must I catnap? must you catnap? must he catnap? must we catnap? must you catnap? must they catnap?	must I be catnapping? must you be catnapping? must he be catnapping? must we be catnapping? must you be catnapping? must they be catnapping?
Perfect	V-ing perfect
must I have catnapped? must you have catnapped? must he have catnapped? must we have catnapped? must you have catnapped? must they have catnapped?	must I have been catnapping? must you have been catnapping? must he have been catnapping? must we have been catnapping? must you have been catnapping? must they have been catnapping?

Interro-negative form

Simple form	V-ing form
mustn't I catnap? mustn't you catnap? mustn't he catnap? mustn't we catnap? mustn't you catnap? mustn't they catnap?	mustn't I be catnapping? mustn't you be catnapping? mustn't he be catnapping? mustn't we be catnapping? mustn't you be catnapping? mustn't they be catnapping?
Perfect	V-ing perfect
mustn't I have catnapped? mustn't you have catnapped? mustn't he have catnapped? mustn't we have catnapped? mustn't you have catnapped? mustn't they have catnapped?	mustn't I have been catnapping? mustn't you have been catnapping? mustn't he have been catnapping? mustn't we have been catnapping? mustn't you have been catnapping? mustn't they have been catnapping?