1, Powunikira nsalu, zida zoyambira zomwe zimagwiritsidwa ntchito ndi: galasi lansalu, galasi lokulitsa, singano yowunikira, chowongolera, pepala la graph, ndi zina. 2,Kusanthula kapangidwe ka nsalu, a. Dziwani momwe nsalu imagwirira ntchito kutsogolo ndi kumbuyo, komanso njira yoluka ...
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