Imwe, ibyuma byose bidafite ingese impumyi rivet irwanya ubushyuhe bwinshi.
Babiri, imikorere yumubiri yibyuma byose bitagira umuyonga rivet, ifite umuvuduko mwinshi w'amashanyarazi.
Bitatu, ibyuma byose bidafite ingese impumyi rivet imbaraga, umutwaro ukomeye.
Igihe cyo kohereza: Mutarama-25-2021