C11112331312111112111133133313331333133112323121111331311331333133311223311   >>    C1111233131211111211113313331333133313311232312111133131133133313331122331   <<    C11112331312111112111133133313331333133112323121111331311331333133311223313   >>      C11112331312111112111133133313331333133112323121111331311331333133311223312   >>