C1111233133313231133133313331333133313231323331311331323132313331333223121   >>    C111123313331323113313331333133313331323132333131133132313231333133322312   <<    C1111233133313231133133313331333133313231323331311331323132313331333223123   >>      C1111233133313231133133313331333133313231323331311331323132313331333223122   >>