I must lacerate you must lacerate she must lacerate we must lacerate you must lacerate they must lacerate
V-ing form
I must be lacerating you must be lacerating she must be lacerating we must be lacerating you must be lacerating they must be lacerating
Perfect
I must have lacerated you must have lacerated she must have lacerated we must have lacerated you must have lacerated they must have lacerated
V-ing perfect
I must have been lacerating you must have been lacerating she must have been lacerating we must have been lacerating you must have been lacerating they must have been lacerating
Negation
Simple form
I must not lacerate you must not lacerate she must not lacerate we must not lacerate you must not lacerate they must not lacerate
V-ing form
I must not be lacerating you must not be lacerating she must not be lacerating we must not be lacerating you must not be lacerating they must not be lacerating
Perfect
I must not have lacerated you must not have lacerated she must not have lacerated we must not have lacerated you must not have lacerated they must not have lacerated
V-ing perfect
I must not have been lacerating you must not have been lacerating she must not have been lacerating we must not have been lacerating you must not have been lacerating they must not have been lacerating
Interrogative form
Simple form
must I lacerate? must you lacerate? must she lacerate? must we lacerate? must you lacerate? must they lacerate?
V-ing form
must I be lacerating? must you be lacerating? must she be lacerating? must we be lacerating? must you be lacerating? must they be lacerating?
Perfect
must I have lacerated? must you have lacerated? must she have lacerated? must we have lacerated? must you have lacerated? must they have lacerated?
V-ing perfect
must I have been lacerating? must you have been lacerating? must she have been lacerating? must we have been lacerating? must you have been lacerating? must they have been lacerating?
Interro-negative form
Simple form
must I not lacerate? must you not lacerate? must she not lacerate? must we not lacerate? must you not lacerate? must they not lacerate?
V-ing form
must I not be lacerating? must you not be lacerating? must she not be lacerating? must we not be lacerating? must you not be lacerating? must they not be lacerating?
Perfect
must I not have lacerated? must you not have lacerated? must she not have lacerated? must we not have lacerated? must you not have lacerated? must they not have lacerated?
V-ing perfect
must I not have been lacerating? must you not have been lacerating? must she not have been lacerating? must we not have been lacerating? must you not have been lacerating? must they not have been lacerating?