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 must not prolapse you must not prolapse he must not prolapse we must not prolapse you must not prolapse they must not prolapse
V-ing form
I must not be prolapsing you must not be prolapsing he must not be prolapsing we must not be prolapsing you must not be prolapsing they must not be prolapsing
Perfect
I must not have prolapsed you must not have prolapsed he must not have prolapsed we must not have prolapsed you must not have prolapsed they must not have prolapsed
V-ing perfect
I must not have been prolapsing you must not have been prolapsing he must not have been prolapsing we must not have been prolapsing you must not have been prolapsing they must not 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
must I not prolapse? must you not prolapse? must he not prolapse? must we not prolapse? must you not prolapse? must they not prolapse?
V-ing form
must I not be prolapsing? must you not be prolapsing? must he not be prolapsing? must we not be prolapsing? must you not be prolapsing? must they not be prolapsing?
Perfect
must I not have prolapsed? must you not have prolapsed? must he not have prolapsed? must we not have prolapsed? must you not have prolapsed? must they not have prolapsed?
V-ing perfect
must I not have been prolapsing? must you not have been prolapsing? must he not have been prolapsing? must we not have been prolapsing? must you not have been prolapsing? must they not have been prolapsing?