 Wuxuu ballanqaaday in dhinacyada kala duwan uu wadahadalo la gali doono muddo 100 maalmood gudahood ah, laakiin ballaqaadkii ugu horreeyay ee xisbiga muxaafidka ayaa laga joogaa 1,000 maalmood, taasi oo ah in xal loo helo dhibaatada hannaanka daryeelka bulshada ee muhimka ah. 