I must restrict you must restrict he must restrict we must restrict you must restrict they must restrict
V-ing form
I must be restricting you must be restricting he must be restricting we must be restricting you must be restricting they must be restricting
Perfect
I must have restricted you must have restricted he must have restricted we must have restricted you must have restricted they must have restricted
V-ing perfect
I must have been restricting you must have been restricting he must have been restricting we must have been restricting you must have been restricting they must have been restricting
Negation
Simple form
I must not restrict you must not restrict he must not restrict we must not restrict you must not restrict they must not restrict
V-ing form
I must not be restricting you must not be restricting he must not be restricting we must not be restricting you must not be restricting they must not be restricting
Perfect
I must not have restricted you must not have restricted he must not have restricted we must not have restricted you must not have restricted they must not have restricted
V-ing perfect
I must not have been restricting you must not have been restricting he must not have been restricting we must not have been restricting you must not have been restricting they must not have been restricting
Interrogative form
Simple form
must I restrict? must you restrict? must he restrict? must we restrict? must you restrict? must they restrict?
V-ing form
must I be restricting? must you be restricting? must he be restricting? must we be restricting? must you be restricting? must they be restricting?
Perfect
must I have restricted? must you have restricted? must he have restricted? must we have restricted? must you have restricted? must they have restricted?
V-ing perfect
must I have been restricting? must you have been restricting? must he have been restricting? must we have been restricting? must you have been restricting? must they have been restricting?
Interro-negative form
Simple form
must I not restrict? must you not restrict? must he not restrict? must we not restrict? must you not restrict? must they not restrict?
V-ing form
must I not be restricting? must you not be restricting? must he not be restricting? must we not be restricting? must you not be restricting? must they not be restricting?
Perfect
must I not have restricted? must you not have restricted? must he not have restricted? must we not have restricted? must you not have restricted? must they not have restricted?
V-ing perfect
must I not have been restricting? must you not have been restricting? must he not have been restricting? must we not have been restricting? must you not have been restricting? must they not have been restricting?