C1311213331333132332133313331333133313121111331333133313233322311   >>    C131121333133313233213331333133313331312111133133313331323332231   <<    C1311213331333132332133313331333133313121111331333133313233322313   >>      C1311213331333132332133313331333133313121111331333133313233322312   >>