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Nkuko bisanzwe, impuzu zifite imirimo ibiri yibanze: gushushanya no kurinda bifite akamaro kanini mubukungu. Ipitingi ikora irashobora gukoreshwa kugirango ihindure imiterere yubuso bwa substrate, nko gufatira, guhindagurika, kurwanya ruswa, cyangwa kwambara. Mu byuma indus ...Soma byinshi»