C31231211113313121211113313331333133313331213331323133313331123313221223213121   >>    C3123121111331312121111331333133313331333121333132313331333112331322122321312   <<    C31231211113313121211113313331333133313331213331323133313331123313221223213123   >>      C31231211113313121211113313331333133313331213331323133313331123313221223213122   >>