C1311213331333132332133313331333133313121111331333133313223313333121   >>    C131121333133313233213331333133313331312111133133313331322331333312   <<    C1311213331333132332133313331333133313121111331333133313223313333123   >>      C1311213331333132332133313331333133313121111331333133313223313333122   >>