C13112133313331323321333133313331333133313331333133313331312111133133331211   >>    C1311213331333132332133313331333133313331333133313331333131211113313333121   <<    C13112133313331323321333133313331333133313331333133313331312111133133331213   >>      C13112133313331323321333133313331333133313331333133313331312111133133331212   >>