C111112111133131121133133313331333133313331323133313331333133313331331121233211   >>    C11111211113313112113313331333133313331333132313331333133313331333133112123321   <<    C111112111133131121133133313331333133313331323133313331333133313331331121233213   >>      C111112111133131121133133313331333133313331323133313331333133313331331121233212   >>