C13112133313331323321333133313331333133313331311331323133313221311222233121   >>    C1311213331333132332133313331333133313331333131133132313331322131122223312   <<    C13112133313331323321333133313331333133313331311331323133313221311222233123   >>      C13112133313331323321333133313331333133313331311331323133313221311222233122   >>