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Mela e 6 ea mochini oa pampiri ea lithane tsa sefahleho o ikemela moleng oa tlhahiso ea pampiri
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YB-3L mochini oa tlhahiso ea pampiri ea sefahleho o ikatisang o nang le mochini oa ho itšeha
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YB-2L menahano ea khoebo e nyane ea mochini o kopanyang theko ea pampiri ea sefahleho
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YB-4 lane thaole e bonolo ea sefahleho sa pampiri ea ho etsa mochini