C11112331312111112111133133313331333133313331333133313113313231123311   >>    C1111233131211111211113313331333133313331333133313331311331323112331   <<    C11112331312111112111133133313331333133313331333133313113313231123313   >>      C11112331312111112111133133313331333133313331333133313113313231123312   >>