Chosinthira magetsi chowirikiza kawiri chimagwiritsidwa ntchito kusinthana pakati pa magwero awiri amagetsi. Chimagawidwa m'magulu awiri: magetsi wamba ndi magetsi okhazikika. Mphamvu wamba zikamazima, magetsi okhazikika amagwiritsidwa ntchito. Mphamvu wamba ikayitanidwa, magetsi wamba amabwezeretsedwa), ngati simukusowa kusinthana kokha pazochitika zapadera, mutha kuyiyikanso ku kusinthana kwamanja (mtundu uwu wa kugwiritsa ntchito pamanja / kugwiritsa ntchito pamanja kawiri, kusintha kosasinthika).