Bitewe nuburyo bwo gucukura, cyangwa imikorere itari yo ya biti, uburyo bwo kwambara bukorwa.
Niba bidaciriwe urubanza hakiri kare kandi bikongera gusya mbere yuko ukwezi kwayo kugeze, imyitozo ya biti izakora nabi cyangwa inanirwe imburagihe.
Menya neza ko bito bito (usibye amenyo avanze) bidahuye nicyuma
