I-1, isethi ephelele yentambo yensimbi ngaphambi kokusetshenziswa, i-hook yentambo yokufaka intambo exhunywe ngqo phakathi nendawo yamandla, ayikwazi ukuxhunyaniswa nezingxenye zephuzu le-hook; 2, izintambo ezimbili eziboshwe ngaphambi kokusetshenziswa, izintambo ezimbili eziboshwe zixhunywe ngokuqondile ehhuku eliphindwe kabili, izinsimbi ezimbili ezilenga ku-double hook symme...
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