C111112111133131121133133313331333133313331312111133133313331321123232211312111   >>    C11111211113313112113313331333133313331333131211113313331333132112323221131211   <<    C111112111133131121133133313331333133313331312111133133313331321123232211312113   >>      C111112111133131121133133313331333133313331312111133133313331321123232211312112   >>