Kumanika ibirango ni amakarita yubucuruzi yingenzi kumyambaro, idashobora kwerekana neza gusa ibintu, ibisobanuro, icyitegererezo nibindi bipimo byimyenda, ariko kandi binatezimbere ingaruka zimyenda yimyenda. Ibara rikurikira-P rizavuga inzira yoroshye yo gutunganya ibirango by'imyenda: 1. F ...
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