Ibiikayeni ngirakamaro kandi yoroshye, kandi irashobora kandi guhindurwa hamwe na loglo, hamwe numufuka wo gukusanya byoroshye, hamwe n'ikaramu imbere hamwe nibisanzwe byoroshye, bishobora kwandika vuba kandi neza, kandi bigahuza nibikorwa bitandukanye byubucuruzi.Guhitamo neza kubakozi bo mu biro byinshi kandi nimpano nziza muminsi mikuru cyangwa iminsi y'amavuko.
Ikiranga:
1. Ikirangantego:IkayeIkirangantego.
2. Imikoreshereze yagutse: impano zo mu biro, impano zubucuruzi, impano za Noheri, impano yumwaka mushya, impano zikaze, impano zumuryango, nibindi.