120 ibyuma byerekana urukuta rukora ni ubwoko buremereye n'imbaraga nyinshi. Hamwe na torsion irwanya icyuma-cyuma nkamakadiri ahujwe na pande yo mu rwego rwo hejuru, ibyuma 120 byerekana urukuta rwerekana uburebure bwigihe kirekire cyane kandi birangiye neza.