Kumenyekanisha ibice 2-byimfuruka yinyuma yinyandiko, igisubizo cyiza cyo kubaka inzego zikomeye kandi zizewe. Ibicuruzwa byinshi byashizweho kugirango bitange imiyoboro itekanye kumiyoboro yinkingi, bivamo ibintu byinshi mubikorwa byubwubatsi. Ibice 2-byimyanya yimyanya ndende biramba mubwubatsi kandi byoroshye kuyishyiraho, bigatuma biba byiza kumushinga uwo ariwo wose usaba inkunga yizewe kandi ihamye.