C212212121212113313221323131323131323132322331323132233132313331333131232111   >>    C21221212121211331322132313132313132313232233132313223313231333133313123211   <<    C212212121212113313221323131323131323132322331323132233132313331333131232113   >>      C212212121212113313221323131323131323132322331323132233132313331333131232112   >>