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