Ibisabwa: urugo rwubwenge, imodoka, inganda, umurongo mugari wa elegitoronike, ubuvuzi, ingufu nshya.
Ibyuma byo mu rwego rwohejuru byabigenewe birenze ubwiza bwicyuma cyambere, hamwe nukuri kwicyuma cyihanganira ubushyuhe bwo hejuru, icyuma cyambere gishobora kwihanganira ubushyuhe bwa dogere 90, kandi ibyuma byabigenewe birashobora kwihanganira ubushyuhe bwa hejuru ya dogere 200.