1. Ngokwalokho okusetshenziswayo, ihlukaniswe ngamabhola wensimbi aphansi, amabhola wensimbi aphakathi nendawo, amabhola ensimbi ephezulu, izinto ezisemqoka zingu-1010-1015, 1045, 1085, njll .; 2. Ngokuya ngobulukhuni, ihlukaniswe ngamabhola athambile namabhola aqinile, ukwahlulela ukuthi ukwelashwa kokushisa ...
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