C3123121111331312121111331333133313331333121333133313331211113311233132222121   >>    C312312111133131212111133133313331333133312133313331333121111331123313222212   <<    C3123121111331312121111331333133313331333121333133313331211113311233132222123   >>      C3123121111331312121111331333133313331333121333133313331211113311233132222122   >>