C13112133313331323321333133313331333133313331333133313331333133311112113121   >>    C1311213331333132332133313331333133313331333133313331333133313331111211312   <<    C13112133313331323321333133313331333133313331333133313331333133311112113123   >>      C13112133313331323321333133313331333133313331333133313331333133311112113122   >>