Amashanyarazi yinganda zikoreshwa muburyo butandukanye aho ubushyuhe bwikintu cyangwa inzira bigomba kwiyongera.Kurugero, amavuta yo gusiga agomba gushyuha mbere yo kugaburirwa imashini, cyangwa, umuyoboro ushobora gusaba gukoresha icyuma gifata ibyuma kugirango wirinde gukonja.