C11112331312111112111133133313331333132323213311331323133313113311212321   >>    C1111233131211111211113313331333133313232321331133132313331311331121232   <<    C11112331312111112111133133313331333132323213311331323133313113311212323   >>      C11112331312111112111133133313331333132323213311331323133313113311212322   >>