1, ikiganza - icyuma gishimangira imbaraga, gikomeye kandi cyiza
2, icyari cyiziritse-gishobora gusimbuza igikonje gikonje nipamba ukurikije ibihe bine byimihindagurikire yikirere
3, byiza - guhumeka neza
4,Ibikoresho byatoranijwe byatoranijwe, birinda kwambara kandi birwanya umwanda, ntabwo byoroshye guhinduka
Ikozwe mubintu byiza-100% byunvikana, ntabwo byoroshye guhinduka, gushyuha kandi neza, birinda kwambara kandi birwanya umwanda.