Ivalvu
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Ivalvu yentsimbi engenasici yentsimbi ephosiweyo
Ivalvu yinxalenye yolawulo kwinkqubo yokuhambisa ulwelo lombhobho. Isetyenziselwa ukutshintsha icandelo lomjelo kunye necala lokuhamba komoya okuphakathi. Inemisebenzi yokuphambukisa, ukusika, ukuqhobosha, ukujonga, ukushukuma okanye ukunciphisa uxinzelelo olugqithisileyo.