C11112331312111112111133133313331333133313123313331311331211113313331323122331   >>    C1111233131211111211113313331333133313331312331333131133121111331333132312233   <<    C11112331312111112111133133313331333133313123313331311331211113313331323122333   >>      C11112331312111112111133133313331333133313123313331311331211113313331323122332   >>