C1111233133313231133133313331333133313231323331333133313331311331333131121   >>    C111123313331323113313331333133313331323132333133313331333131133133313112   <<    C1111233133313231133133313331333133313231323331333133313331311331333131123   >>      C1111233133313231133133313331333133313231323331333133313331311331333131122   >>