C111112111133131121133133313331333133313221333133313231333211211   >>    C11111211113313112113313331333133313331322133313331323133321121   <<    C111112111133131121133133313331333133313221333133313231333211213   >>      C111112111133131121133133313331333133313221333133313231333211212   >>