C3123121111331312121111331333133313331333121333133313331211111133132232131221   >>    C312312111133131212111133133313331333133312133313331333121111113313223213122   <<    C3123121111331312121111331333133313331333121333133313331211111133132232131223   >>      C3123121111331312121111331333133313331333121333133313331211111133132232131222   >>