I must labialize you must labialize he must labialize we must labialize you must labialize they must labialize
V-ing form
I must be labializing you must be labializing he must be labializing we must be labializing you must be labializing they must be labializing
Perfect
I must have labialized you must have labialized he must have labialized we must have labialized you must have labialized they must have labialized
V-ing perfect
I must have been labializing you must have been labializing he must have been labializing we must have been labializing you must have been labializing they must have been labializing
Negation
Simple form
I must not labialize you must not labialize he must not labialize we must not labialize you must not labialize they must not labialize
V-ing form
I must not be labializing you must not be labializing he must not be labializing we must not be labializing you must not be labializing they must not be labializing
Perfect
I must not have labialized you must not have labialized he must not have labialized we must not have labialized you must not have labialized they must not have labialized
V-ing perfect
I must not have been labializing you must not have been labializing he must not have been labializing we must not have been labializing you must not have been labializing they must not have been labializing
Interrogative form
Simple form
must I labialize? must you labialize? must he labialize? must we labialize? must you labialize? must they labialize?
V-ing form
must I be labializing? must you be labializing? must he be labializing? must we be labializing? must you be labializing? must they be labializing?
Perfect
must I have labialized? must you have labialized? must he have labialized? must we have labialized? must you have labialized? must they have labialized?
V-ing perfect
must I have been labializing? must you have been labializing? must he have been labializing? must we have been labializing? must you have been labializing? must they have been labializing?
Interro-negative form
Simple form
must I not labialize? must you not labialize? must he not labialize? must we not labialize? must you not labialize? must they not labialize?
V-ing form
must I not be labializing? must you not be labializing? must he not be labializing? must we not be labializing? must you not be labializing? must they not be labializing?
Perfect
must I not have labialized? must you not have labialized? must he not have labialized? must we not have labialized? must you not have labialized? must they not have labialized?
V-ing perfect
must I not have been labializing? must you not have been labializing? must he not have been labializing? must we not have been labializing? must you not have been labializing? must they not have been labializing?