C13112133313331323321333133313331333133313331311331323231312131   >>    C1311213331333132332133313331333133313331333131133132323131213   <<    C13112133313331323321333133313331333133313331311331323231312133   >>      C13112133313331323321333133313331333133313331311331323231312132   >>