Teraka ea ho fihla ke mofuta o ikhethileng oa koloi e sebetsanang le thepa e etselitsoeng ho ntlafatsa ts'ebetso ea ho boloka le ho khutlisa matlong a polokelo le litsing tsa phepelo. Ho fapana le lifereko tsa setso, mechini ena e sebetsa hantle litseleng tse moqotetsane, e lumellang basebelisi ho eketsa sebaka se otlolohileng ka ho bokella thepa ho greate.