C111112111133131121133133313331333133313331322121111331333133313223313123231331   >>    C11111211113313112113313331333133313331333132212111133133313331322331312323133   <<    C111112111133131121133133313331333133313331322121111331333133313223313123231333   >>      C111112111133131121133133313331333133313331322121111331333133313223313123231332   >>