I must slenderize you must slenderize he must slenderize we must slenderize you must slenderize they must slenderize
V-ing form
I must be slenderizing you must be slenderizing he must be slenderizing we must be slenderizing you must be slenderizing they must be slenderizing
Perfect
I must have slenderized you must have slenderized he must have slenderized we must have slenderized you must have slenderized they must have slenderized
V-ing perfect
I must have been slenderizing you must have been slenderizing he must have been slenderizing we must have been slenderizing you must have been slenderizing they must have been slenderizing
Negation
Simple form
I mustn't slenderize you mustn't slenderize he mustn't slenderize we mustn't slenderize you mustn't slenderize they mustn't slenderize
V-ing form
I mustn't be slenderizing you mustn't be slenderizing he mustn't be slenderizing we mustn't be slenderizing you mustn't be slenderizing they mustn't be slenderizing
Perfect
I mustn't have slenderized you mustn't have slenderized he mustn't have slenderized we mustn't have slenderized you mustn't have slenderized they mustn't have slenderized
V-ing perfect
I mustn't have been slenderizing you mustn't have been slenderizing he mustn't have been slenderizing we mustn't have been slenderizing you mustn't have been slenderizing they mustn't have been slenderizing
Interrogative form
Simple form
must I slenderize? must you slenderize? must he slenderize? must we slenderize? must you slenderize? must they slenderize?
V-ing form
must I be slenderizing? must you be slenderizing? must he be slenderizing? must we be slenderizing? must you be slenderizing? must they be slenderizing?
Perfect
must I have slenderized? must you have slenderized? must he have slenderized? must we have slenderized? must you have slenderized? must they have slenderized?
V-ing perfect
must I have been slenderizing? must you have been slenderizing? must he have been slenderizing? must we have been slenderizing? must you have been slenderizing? must they have been slenderizing?
Interro-negative form
Simple form
mustn't I slenderize? mustn't you slenderize? mustn't he slenderize? mustn't we slenderize? mustn't you slenderize? mustn't they slenderize?
V-ing form
mustn't I be slenderizing? mustn't you be slenderizing? mustn't he be slenderizing? mustn't we be slenderizing? mustn't you be slenderizing? mustn't they be slenderizing?
Perfect
mustn't I have slenderized? mustn't you have slenderized? mustn't he have slenderized? mustn't we have slenderized? mustn't you have slenderized? mustn't they have slenderized?
V-ing perfect
mustn't I have been slenderizing? mustn't you have been slenderizing? mustn't he have been slenderizing? mustn't we have been slenderizing? mustn't you have been slenderizing? mustn't they have been slenderizing?