C1311213331333132332133313331333133313121111331333133313331123311211331   >>    C131121333133313233213331333133313331312111133133313331333112331121133   <<    C1311213331333132332133313331333133313121111331333133313331123311211333   >>      C1311213331333132332133313331333133313121111331333133313331123311211332   >>