C1311213331333132332133313331333133313121111331333133313331333111231   >>    C131121333133313233213331333133313331312111133133313331333133311123   <<    C1311213331333132332133313331333133313121111331333133313331333111233   >>      C1311213331333132332133313331333133313121111331333133313331333111232   >>