65 Urukuta rwicyuma ni sisitemu ikoreshwa kandi yose. Ibaba risanzwe rifite uburemere bworoshye kandi nubushobozi buke. Hamwe nimbaho idasanzwe nkabahuza kugirango bose bahure, ibikorwa bitoroshye, gufunga byihuse-inshuro nyinshi no gukora neza byagezweho neza.