I must free-fall you must free-fall he must free-fall we must free-fall you must free-fall they must free-fall
V-ing form
I must be free-falling you must be free-falling he must be free-falling we must be free-falling you must be free-falling they must be free-falling
Perfect
I must have free-fallen you must have free-fallen he must have free-fallen we must have free-fallen you must have free-fallen they must have free-fallen
V-ing perfect
I must have been free-falling you must have been free-falling he must have been free-falling we must have been free-falling you must have been free-falling they must have been free-falling
Negation
Simple form
I mustn't free-fall you mustn't free-fall he mustn't free-fall we mustn't free-fall you mustn't free-fall they mustn't free-fall
V-ing form
I mustn't be free-falling you mustn't be free-falling he mustn't be free-falling we mustn't be free-falling you mustn't be free-falling they mustn't be free-falling
Perfect
I mustn't have free-fallen you mustn't have free-fallen he mustn't have free-fallen we mustn't have free-fallen you mustn't have free-fallen they mustn't have free-fallen
V-ing perfect
I mustn't have been free-falling you mustn't have been free-falling he mustn't have been free-falling we mustn't have been free-falling you mustn't have been free-falling they mustn't have been free-falling
Interrogative form
Simple form
must I free-fall? must you free-fall? must he free-fall? must we free-fall? must you free-fall? must they free-fall?
V-ing form
must I be free-falling? must you be free-falling? must he be free-falling? must we be free-falling? must you be free-falling? must they be free-falling?
Perfect
must I have free-fallen? must you have free-fallen? must he have free-fallen? must we have free-fallen? must you have free-fallen? must they have free-fallen?
V-ing perfect
must I have been free-falling? must you have been free-falling? must he have been free-falling? must we have been free-falling? must you have been free-falling? must they have been free-falling?
Interro-negative form
Simple form
mustn't I free-fall? mustn't you free-fall? mustn't he free-fall? mustn't we free-fall? mustn't you free-fall? mustn't they free-fall?
V-ing form
mustn't I be free-falling? mustn't you be free-falling? mustn't he be free-falling? mustn't we be free-falling? mustn't you be free-falling? mustn't they be free-falling?
Perfect
mustn't I have free-fallen? mustn't you have free-fallen? mustn't he have free-fallen? mustn't we have free-fallen? mustn't you have free-fallen? mustn't they have free-fallen?
V-ing perfect
mustn't I have been free-falling? mustn't you have been free-falling? mustn't he have been free-falling? mustn't we have been free-falling? mustn't you have been free-falling? mustn't they have been free-falling?