C1311213331333132332133313331333133313121111331333133313223313231311211   >>    C131121333133313233213331333133313331312111133133313331322331323131121   <<    C1311213331333132332133313331333133313121111331333133313223313231311213   >>      C1311213331333132332133313331333133313121111331333133313223313231311212   >>