C11112331312111112111133133313331333132323213311331323133313113313231333233111   >>    C1111233131211111211113313331333133313232321331133132313331311331323133323311   <<    C11112331312111112111133133313331333132323213311331323133313113313231333233113   >>      C11112331312111112111133133313331333132323213311331323133313113313231333233112   >>