I must dematerialize you must dematerialize he must dematerialize we must dematerialize you must dematerialize they must dematerialize
V-ing form
I must be dematerializing you must be dematerializing he must be dematerializing we must be dematerializing you must be dematerializing they must be dematerializing
Perfect
I must have dematerialized you must have dematerialized he must have dematerialized we must have dematerialized you must have dematerialized they must have dematerialized
V-ing perfect
I must have been dematerializing you must have been dematerializing he must have been dematerializing we must have been dematerializing you must have been dematerializing they must have been dematerializing
Negation
Simple form
I must not dematerialize you must not dematerialize he must not dematerialize we must not dematerialize you must not dematerialize they must not dematerialize
V-ing form
I must not be dematerializing you must not be dematerializing he must not be dematerializing we must not be dematerializing you must not be dematerializing they must not be dematerializing
Perfect
I must not have dematerialized you must not have dematerialized he must not have dematerialized we must not have dematerialized you must not have dematerialized they must not have dematerialized
V-ing perfect
I must not have been dematerializing you must not have been dematerializing he must not have been dematerializing we must not have been dematerializing you must not have been dematerializing they must not have been dematerializing
Interrogative form
Simple form
must I dematerialize? must you dematerialize? must he dematerialize? must we dematerialize? must you dematerialize? must they dematerialize?
V-ing form
must I be dematerializing? must you be dematerializing? must he be dematerializing? must we be dematerializing? must you be dematerializing? must they be dematerializing?
Perfect
must I have dematerialized? must you have dematerialized? must he have dematerialized? must we have dematerialized? must you have dematerialized? must they have dematerialized?
V-ing perfect
must I have been dematerializing? must you have been dematerializing? must he have been dematerializing? must we have been dematerializing? must you have been dematerializing? must they have been dematerializing?
Interro-negative form
Simple form
must I not dematerialize? must you not dematerialize? must he not dematerialize? must we not dematerialize? must you not dematerialize? must they not dematerialize?
V-ing form
must I not be dematerializing? must you not be dematerializing? must he not be dematerializing? must we not be dematerializing? must you not be dematerializing? must they not be dematerializing?
Perfect
must I not have dematerialized? must you not have dematerialized? must he not have dematerialized? must we not have dematerialized? must you not have dematerialized? must they not have dematerialized?
V-ing perfect
must I not have been dematerializing? must you not have been dematerializing? must he not have been dematerializing? must we not have been dematerializing? must you not have been dematerializing? must they not have been dematerializing?