C111123313331323113313331333133313331323123231333133313331322232233121   >>    C11112331333132311331333133313331333132312323133313331333132223223312   <<    C111123313331323113313331333133313331323123231333133313331322232233123   >>      C111123313331323113313331333133313331323123231333133313331322232233122   >>