C111112111133131121133133313331333133313331323133313331333133112213123221   >>    C11111211113313112113313331333133313331333132313331333133313311221312322   <<    C111112111133131121133133313331333133313331323133313331333133112213123223   >>      C111112111133131121133133313331333133313331323133313331333133112213123222   >>