C1311213331333132332133313331333133313331333312111133133313223231211   >>    C131121333133313233213331333133313331333133331211113313331322323121   <<    C1311213331333132332133313331333133313331333312111133133313223231213   >>      C1311213331333132332133313331333133313331333312111133133313223231212   >>