Umuyoboro wibyuma nibicuruzwa bikoreshwa cyane mubyuma, kandi hariho ubwoko bwinshi, bishyirwa mubikorwa ukurikije ibintu bitandukanye nkibikorwa byo gukora, ibikoresho, no gukoresha. Bimwe mubisanzwe ibyuma byicyuma byashyizwe mubikorwa hamwe nikoreshwa ryabyo kurutonde hepfo: ...
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