Umwanya mwiza kandi mwiza, umwanya mwiza wo kuvura.
Igice kimwe cyubwubatsi burambye.
Sisitemu ebyiri zo gukoraho sisitemu, haba imbere no hanze.
Ingano 3 kubantu 1-2 bakoresha.
Koresha uburyo butandukanye burimo uburiri, intebe, intebe eshatu, n'intebe imwe ya sofa.
Emerera abantu benshi guhumeka ogisijene icyarimwe hamwe na sisitemu yo guhumeka no guhumeka.