Kupha tizilombo toyambitsa matenda m’machubu olowera mpweya n’kofunika kuti tipewe kufalikira kwa matenda m’zipatala.Izi zimagwiritsa ntchito njira yamphamvu yopha tizilombo toyambitsa matenda kuyeretsa ndi kuyeretsa machubu, kuonetsetsa chitetezo cha odwala ndi akatswiri azaumoyo.Ndi yosavuta kugwiritsa ntchito ndipo ingagwiritsidwe ntchito pazida zosiyanasiyana zolowera mpweya.