E loketse lipapali tsa ho pholoha le lisebelisoa tse ling tsa polokelo ea libetsa, joalo ka sethunya, sethunya le lisebelisoa tse ling.E entsoe ka tšepe e boima, boima bo matla ba boima ba 'mele, ho kenngoa ha bonolo, ho paka ka litšenyehelo ho boloka litefiso tsa thepa.