C1311213331333132332133313331333133313121111331333133313331333133313223131211   >>    C131121333133313233213331333133313331312111133133313331333133313331322313121   <<    C1311213331333132332133313331333133313121111331333133313331333133313223131213   >>      C1311213331333132332133313331333133313121111331333133313331333133313223131212   >>