C11112331312111112111133133313331333133313331333133313331333132211223311   >>    C1111233131211111211113313331333133313331333133313331333133313221122331   <<    C11112331312111112111133133313331333133313331333133313331333132211223313   >>      C11112331312111112111133133313331333133313331333133313331333132211223312   >>