Obwaato buri aha rubaju rw'enyanja, obwaato obu niburungi aha rubaju rwaabo hariho embwa kandi obwaato obu buri omu rangi zitakushushana aha kuba buri omu rangi eya bururu n'erangi eya mutare kandi amaizi nigareebeka gye ahakuba gari omu rangi etakushuushana nka erangi ya mutare n'erangi ya bururu.