 Icyo gihe rwatangijwe mu buryo bwingoboka, butuma hakoreshwa umuti utarahabwa uruhushya rwo gukoreshwa urwo ruhushya rushobora gufata imyaka ibarirwa no muri za mirongo kugira ngo rutangwe mu gihe nta yandi mahitamo ahari, ariko byemewe nigihugu kirangwamo iyo ndwara. 