Imwe: ibyuma. Ukurikije imiterere yiki gice, irashobora kugabanywamo ibyuma bizengurutse, ibyuma biringaniye, ibyuma bya kare, ibyuma bya mpande esheshatu, ibyuma bya mpande enye, ibyuma bifata inguni, I-beam, ibyuma byumuyoboro, ibyuma bya T, ibyuma bya T, ibyuma B, nibindi. Babiri: Isahani y'icyuma! Isahani yibyibushye (uburebure bwa $% mm) nicyuma cyoroshye ...
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