English verb conjugation
MUST NAP

Regular verb: nap - napped - napped

Affirmation

Simple form	V-ing form
I must nap you must nap he must nap we must nap you must nap they must nap	I must be napping you must be napping he must be napping we must be napping you must be napping they must be napping
Perfect	V-ing perfect
I must have napped you must have napped he must have napped we must have napped you must have napped they must have napped	I must have been napping you must have been napping he must have been napping we must have been napping you must have been napping they must have been napping

Negation

Simple form	V-ing form
I mustn't nap you mustn't nap he mustn't nap we mustn't nap you mustn't nap they mustn't nap	I mustn't be napping you mustn't be napping he mustn't be napping we mustn't be napping you mustn't be napping they mustn't be napping
Perfect	V-ing perfect
I mustn't have napped you mustn't have napped he mustn't have napped we mustn't have napped you mustn't have napped they mustn't have napped	I mustn't have been napping you mustn't have been napping he mustn't have been napping we mustn't have been napping you mustn't have been napping they mustn't have been napping

Interrogative form

Simple form	V-ing form
must I nap? must you nap? must he nap? must we nap? must you nap? must they nap?	must I be napping? must you be napping? must he be napping? must we be napping? must you be napping? must they be napping?
Perfect	V-ing perfect
must I have napped? must you have napped? must he have napped? must we have napped? must you have napped? must they have napped?	must I have been napping? must you have been napping? must he have been napping? must we have been napping? must you have been napping? must they have been napping?

Interro-negative form

Simple form	V-ing form
mustn't I nap? mustn't you nap? mustn't he nap? mustn't we nap? mustn't you nap? mustn't they nap?	mustn't I be napping? mustn't you be napping? mustn't he be napping? mustn't we be napping? mustn't you be napping? mustn't they be napping?
Perfect	V-ing perfect
mustn't I have napped? mustn't you have napped? mustn't he have napped? mustn't we have napped? mustn't you have napped? mustn't they have napped?	mustn't I have been napping? mustn't you have been napping? mustn't he have been napping? mustn't we have been napping? mustn't you have been napping? mustn't they have been napping?