C111123313331323113313331333133313331323123231333133313232212311221   >>    C11112331333132311331333133313331333132312323133313331323221231122   <<    C111123313331323113313331333133313331323123231333133313232212311223   >>      C111123313331323113313331333133313331323123231333133313232212311222   >>