C1111233133313231133133313331333133313231323331333133313331311331333132233121   >>    C111123313331323113313331333133313331323132333133313331333131133133313223312   <<    C1111233133313231133133313331333133313231323331333133313331311331333132233123   >>      C1111233133313231133133313331333133313231323331333133313331311331333132233122   >>