C13112133313331323321333133313331333131211113313331323223332311   >>    C1311213331333132332133313331333133313121111331333132322333231   <<    C13112133313331323321333133313331333131211113313331323223332313   >>      C13112133313331323321333133313331333131211113313331323223332312   >>