Ibikoresho byumwaka bifite teeh hejuru yimbere ya rm .Ibikoresho byimbere bihora bifatanye nibikoresho byo hanze.
Iyo ushushanyije ibyuma bibiri byo hanze, azunguruka bibaho muburyo bunyuranye.Iyo ushushanya ibikoresho byimbere hamwe nibikoresho byo hanze bizunguruka bibaho muburyo bumwe.
Hagomba kwitonderwa kubijyanye numubare w amenyo kuri buri bikoresho mugihe ushizemo ibikoresho binini (imbere) hamwe nibikoresho bito (byo hanze), kubera ko ubwoko butatu bwo kwivanga bushobora kubaho.
Mubisanzwe ibikoresho byimbere bitwarwa nibikoresho bito byo hanze.
Emerera igishushanyo mbonera cyimashini.