C111112111133131121133133313331333133313331323132313331333133313331323211312121   >>    C11111211113313112113313331333133313331333132313231333133313331333132321131212   <<    C111112111133131121133133313331333133313331323132313331333133313331323211312123   >>      C111112111133131121133133313331333133313331323132313331333133313331323211312122   >>