C111123313331323113313331333133313331323132333133313311233133313232221   >>    C11112331333132311331333133313331333132313233313331331123313331323222   <<    C111123313331323113313331333133313331323132333133313311233133313232223   >>      C111123313331323113313331333133313331323132333133313311233133313232222   >>