Kubisubizo byiza, shyira umupaka kumurongo uzamuka kugirango utange ubuyobozi mugihe cyo gushiramo. Shyiramo umupaka hanyuma ucomeke. Kugira ngo wirinde kwangiza ibyuma, koresha ibiti aho gukubita icyuma mu buryo butaziguye. Shyiramo ubujyakuzimu bushoboka, hamwe nimizi yibyatsi iruhukira kuri santimetero 2 hejuru yubutaka. Witondere aho ushyira impande. Impande hasi zirashobora kuba impanuka.