I must disperse you must disperse he must disperse we must disperse you must disperse they must disperse
V-ing form
I must be dispersing you must be dispersing he must be dispersing we must be dispersing you must be dispersing they must be dispersing
Perfect
I must have dispersed you must have dispersed he must have dispersed we must have dispersed you must have dispersed they must have dispersed
V-ing perfect
I must have been dispersing you must have been dispersing he must have been dispersing we must have been dispersing you must have been dispersing they must have been dispersing
Negation
Simple form
I must not disperse you must not disperse he must not disperse we must not disperse you must not disperse they must not disperse
V-ing form
I must not be dispersing you must not be dispersing he must not be dispersing we must not be dispersing you must not be dispersing they must not be dispersing
Perfect
I must not have dispersed you must not have dispersed he must not have dispersed we must not have dispersed you must not have dispersed they must not have dispersed
V-ing perfect
I must not have been dispersing you must not have been dispersing he must not have been dispersing we must not have been dispersing you must not have been dispersing they must not have been dispersing
Interrogative form
Simple form
must I disperse? must you disperse? must he disperse? must we disperse? must you disperse? must they disperse?
V-ing form
must I be dispersing? must you be dispersing? must he be dispersing? must we be dispersing? must you be dispersing? must they be dispersing?
Perfect
must I have dispersed? must you have dispersed? must he have dispersed? must we have dispersed? must you have dispersed? must they have dispersed?
V-ing perfect
must I have been dispersing? must you have been dispersing? must he have been dispersing? must we have been dispersing? must you have been dispersing? must they have been dispersing?
Interro-negative form
Simple form
must I not disperse? must you not disperse? must he not disperse? must we not disperse? must you not disperse? must they not disperse?
V-ing form
must I not be dispersing? must you not be dispersing? must he not be dispersing? must we not be dispersing? must you not be dispersing? must they not be dispersing?
Perfect
must I not have dispersed? must you not have dispersed? must he not have dispersed? must we not have dispersed? must you not have dispersed? must they not have dispersed?
V-ing perfect
must I not have been dispersing? must you not have been dispersing? must he not have been dispersing? must we not have been dispersing? must you not have been dispersing? must they not have been dispersing?