English verb conjugation
MUST SLEEP

Irregular verb: sleep - slept - slept

Affirmation

Simple form	V-ing form
I must sleep you must sleep he must sleep we must sleep you must sleep they must sleep	I must be sleeping you must be sleeping he must be sleeping we must be sleeping you must be sleeping they must be sleeping
Perfect	V-ing perfect
I must have slept you must have slept he must have slept we must have slept you must have slept they must have slept	I must have been sleeping you must have been sleeping he must have been sleeping we must have been sleeping you must have been sleeping they must have been sleeping

Negation

Simple form	V-ing form
I mustn't sleep you mustn't sleep he mustn't sleep we mustn't sleep you mustn't sleep they mustn't sleep	I mustn't be sleeping you mustn't be sleeping he mustn't be sleeping we mustn't be sleeping you mustn't be sleeping they mustn't be sleeping
Perfect	V-ing perfect
I mustn't have slept you mustn't have slept he mustn't have slept we mustn't have slept you mustn't have slept they mustn't have slept	I mustn't have been sleeping you mustn't have been sleeping he mustn't have been sleeping we mustn't have been sleeping you mustn't have been sleeping they mustn't have been sleeping

Interrogative form

Simple form	V-ing form
must I sleep? must you sleep? must he sleep? must we sleep? must you sleep? must they sleep?	must I be sleeping? must you be sleeping? must he be sleeping? must we be sleeping? must you be sleeping? must they be sleeping?
Perfect	V-ing perfect
must I have slept? must you have slept? must he have slept? must we have slept? must you have slept? must they have slept?	must I have been sleeping? must you have been sleeping? must he have been sleeping? must we have been sleeping? must you have been sleeping? must they have been sleeping?

Interro-negative form

Simple form	V-ing form
mustn't I sleep? mustn't you sleep? mustn't he sleep? mustn't we sleep? mustn't you sleep? mustn't they sleep?	mustn't I be sleeping? mustn't you be sleeping? mustn't he be sleeping? mustn't we be sleeping? mustn't you be sleeping? mustn't they be sleeping?
Perfect	V-ing perfect
mustn't I have slept? mustn't you have slept? mustn't he have slept? mustn't we have slept? mustn't you have slept? mustn't they have slept?	mustn't I have been sleeping? mustn't you have been sleeping? mustn't he have been sleeping? mustn't we have been sleeping? mustn't you have been sleeping? mustn't they have been sleeping?