C13112133313331323321333133313331333133313331311331323133313331312113121   >>    C1311213331333132332133313331333133313331333131133132313331333131211312   <<    C13112133313331323321333133313331333133313331311331323133313331312113123   >>      C13112133313331323321333133313331333133313331311331323133313331312113122   >>