C111112111133131121133133313331333133313331323132313331333133313112233121   >>    C11111211113313112113313331333133313331333132313231333133313331311223312   <<    C111112111133131121133133313331333133313331323132313331333133313112233123   >>      C111112111133131121133133313331333133313331323132313331333133313112233122   >>