C13112133313331323321333133313331333133313331311331333132233131223213123131   >>    C1311213331333132332133313331333133313331333131133133313223313122321312313   <<    C13112133313331323321333133313331333133313331311331333132233131223213123133   >>      C13112133313331323321333133313331333133313331311331333132233131223213123132   >>