Ibisobanuro bigufi:

Uburyo bwo guca icyayi bugizwe ahanini nigitabo kizunguruka kigizwe nigitereko kizunguruka hamwe nicyuma gihamye gifite ubwinshi bwibibanza, kandi amababi yicyayi acibwa nigikorwa ugereranije nicyuma cyimukanwa nicyuma gihamye. Kugereranya neza hagati yicyuma kigenda kandi gihamye kirashobora guhinduka kugirango byuzuze ibisabwa byamababi yicyayi atandukanye.