C111123313331323113313331333133313331323133113313331333132323213223121   >>    C11112331333132311331333133313331333132313311331333133313232321322312   <<    C111123313331323113313331333133313331323133113313331333132323213223123   >>      C111123313331323113313331333133313331323133113313331333132323213223122   >>