C111112111133131121133133313331333133313121111331333133323213331323211211   >>    C11111211113313112113313331333133313331312111133133313332321333132321121   <<    C111112111133131121133133313331333133313121111331333133323213331323211213   >>      C111112111133131121133133313331333133313121111331333133323213331323211212   >>