I-valve iyingxenye yokulawula ohlelweni lokulethwa koketshezi, olunemisebenzi efana nokunqanyulwa, ukulungiswa, ukugeleza kokugeleza, ukuvimbela ukugeleza okuhlehlayo, ukuqiniswa kwengcindezi, ukugeleza kokugeleza noma ukukhululeka kwengcindezi yokuchichima.Amavalvu asetshenziswa ezinhlelweni zokulawula uketshezi asukela kwelula kakhulu yokusika iv...
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