C1311213331333132332133313331333133313331333131333132233131212111   >>    C131121333133313233213331333133313331333133313133313223313121211   <<    C1311213331333132332133313331333133313331333131333132233131212113   >>      C1311213331333132332133313331333133313331333131333132233131212112   >>