Nibisanzwe byacu byoguswera umutwe hamwe nintoki yo kwiyuhagira.Iyi seti ni ntagereranywa kugirango ikoreshwe.Ikiganza cyo kwiyuhagiriramo cyinjijwe mu muyoboro w’amazi kurukuta, hanyuma ushyire umutwe woguswera mubundi bunini bwikiganza cyo kwiyuhagira.