Chosinthira chamagetsi chapawiri chimagwiritsidwa ntchito kusinthana pakati pa magwero awiri amagetsi. Imagawidwa kukhala magetsi wamba komanso magetsi oyimira. Pamene magetsi wamba azimitsidwa, magetsi oyimilira amagwiritsidwa ntchito. Pamene magetsi wamba amatchedwa, magetsi wamba amabwezeretsedwa), ngati simukufuna kusintha basi muzochitika zapadera, mukhoza kuziyika izo kuti kusintha kwamanja (mtundu uwu wa Buku / zodziwikiratu wapawiri-ntchito, mongosintha kusintha).