Urunigi rwicyuma rwicyuma nicyiza cyo hejuru, imbaraga zikomeye zicyuma cyumuti kiramba cyane, kandi nicyiza cyo gukora mubikorwa bikabije kandi bitesha umutwe.Iminyururu yibyuma dutanga irakozwe kandi ikorwa hifashishijwe ubwoko butandukanye bwibyuma kugirango tubone gukoresha imbaraga nimbaraga ziva mumurongo bishoboka.Kubindi bisobanuro cyangwa kubona ibisobanuro nyamuneka twandikire natwe tuzishimira kugufasha.