C1311213331333132332133313331333133313121111331333133313331333132233112131   >>    C131121333133313233213331333133313331312111133133313331333133313223311213   <<    C1311213331333132332133313331333133313121111331333133313331333132233112133   >>      C1311213331333132332133313331333133313121111331333133313331333132233112132   >>