C111112111133131121133133313331333133313331323133313331333133313112113211121   >>    C11111211113313112113313331333133313331333132313331333133313331311211321112   <<    C111112111133131121133133313331333133313331323133313331333133313112113211123   >>      C111112111133131121133133313331333133313331323133313331333133313112113211122   >>