C1311213331333132332133313331333133313121111331333133313211231111   >>    C131121333133313233213331333133313331312111133133313331321123111   <<    C1311213331333132332133313331333133313121111331333133313211231113   >>      C1311213331333132332133313331333133313121111331333133313211231112   >>