I must intersperse you must intersperse he must intersperse we must intersperse you must intersperse they must intersperse
V-ing form
I must be interspersing you must be interspersing he must be interspersing we must be interspersing you must be interspersing they must be interspersing
Perfect
I must have interspersed you must have interspersed he must have interspersed we must have interspersed you must have interspersed they must have interspersed
V-ing perfect
I must have been interspersing you must have been interspersing he must have been interspersing we must have been interspersing you must have been interspersing they must have been interspersing
Negation
Simple form
I must not intersperse you must not intersperse he must not intersperse we must not intersperse you must not intersperse they must not intersperse
V-ing form
I must not be interspersing you must not be interspersing he must not be interspersing we must not be interspersing you must not be interspersing they must not be interspersing
Perfect
I must not have interspersed you must not have interspersed he must not have interspersed we must not have interspersed you must not have interspersed they must not have interspersed
V-ing perfect
I must not have been interspersing you must not have been interspersing he must not have been interspersing we must not have been interspersing you must not have been interspersing they must not have been interspersing
Interrogative form
Simple form
must I intersperse? must you intersperse? must he intersperse? must we intersperse? must you intersperse? must they intersperse?
V-ing form
must I be interspersing? must you be interspersing? must he be interspersing? must we be interspersing? must you be interspersing? must they be interspersing?
Perfect
must I have interspersed? must you have interspersed? must he have interspersed? must we have interspersed? must you have interspersed? must they have interspersed?
V-ing perfect
must I have been interspersing? must you have been interspersing? must he have been interspersing? must we have been interspersing? must you have been interspersing? must they have been interspersing?
Interro-negative form
Simple form
must I not intersperse? must you not intersperse? must he not intersperse? must we not intersperse? must you not intersperse? must they not intersperse?
V-ing form
must I not be interspersing? must you not be interspersing? must he not be interspersing? must we not be interspersing? must you not be interspersing? must they not be interspersing?
Perfect
must I not have interspersed? must you not have interspersed? must he not have interspersed? must we not have interspersed? must you not have interspersed? must they not have interspersed?
V-ing perfect
must I not have been interspersing? must you not have been interspersing? must he not have been interspersing? must we not have been interspersing? must you not have been interspersing? must they not have been interspersing?