(1) Irashobora gukoresha urwego runini rwinganda, gukora neza
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.Ugereranije no guterura ukuboko kugororotse, ibikorwa byo kurangiza bigomba kwihuta kandi bifite akazi keza.
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(1) Amashanyarazi (kubikoresho byose bishyigikiwe kumpera ya boom).
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(3) Inkunga yo guterura vacuum.
(4) Kuzunguruka birahagarara.