Icyuma ni igikoresho gishyigikira gikoreshwa cyane mugushigikira icyerekezo cyerekezo cyerekezo, gihuza nu gihagararo gihagaritse cyibishushanyo mbonera. Nibyoroshye kandi byoroshye, kandi kwishyiriraho biroroshye, kuba ubukungu kandi bufatika. Icyuma gifata umwanya muto kandi byoroshye kubika no gutwara.