C111112111133131121133133313331333133313331323132313331333133313113313223311231   >>    C11111211113313112113313331333133313331333132313231333133313331311331322331123   <<    C111112111133131121133133313331333133313331323132313331333133313113313223311233   >>      C111112111133131121133133313331333133313331323132313331333133313113313223311232   >>