C1311213331333132332133313331333133313121111331333133313331321311   >>    C131121333133313233213331333133313331312111133133313331333132131   <<    C1311213331333132332133313331333133313121111331333133313331321313   >>      C1311213331333132332133313331333133313121111331333133313331321312   >>