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2. Mtundu wa chingwe: Mitundu yosiyanasiyana ya zingwe (mwachitsanzo, zingwe zamkuwa ndi zingwe zamkuwa) zimatha kukhala ndi kukana kosiyanasiyana komanso kukweza mphamvu, kotero chisamaliro chapadera chiyenera kulipidwa pomwe amagwiritsidwa ntchito pofanana.
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4. Mikhalidwe yamagetsi: Magetsi a zingwe zamagetsi zofanana (monga kusokonekera, captacity ndi kusanja) kuyenera kukhazikitsidwa kuti apewe kusokonezedwa mosafunikira kapena kugwetsa magetsi.
