C111123313331323113313331333133313331323132333131133132313231333133323121   >>    C11112331333132311331333133313331333132313233313113313231323133313332312   <<    C111123313331323113313331333133313331323132333131133132313231333133323123   >>      C111123313331323113313331333133313331323132333131133132313231333133323122   >>