C11112331333132311331333133313331333132313311331333133313232213123121   >>    C1111233133313231133133313331333133313231331133133313331323221312312   <<    C11112331333132311331333133313331333132313311331333133313232213123123   >>      C11112331333132311331333133313331333132313311331333133313232213123122   >>