Ibikorwa byo guhinduranya silinderi ebyiri-ibikorwa biyobowe nisoko yindege, harimo guhumeka biri, hanze numwanya ukomeze;
Igikorwa cyo guhinduranya ibikorwa kimwe nigikorwa gifunguye ni ikibuga cyo mu kirere, kandi ibikorwa byo gufunga ni kugaruka kw'impeshyi: Gukora neza: Mubisanzwe Ubwoko (N / O) Ubwoko bwa Gufunga (N / C). Mubisanzwe Gufungura Ubwoko: guhumeka, gufungura; Mubisanzwe Ubwoko: Gufungura, bifunze.
