C31231211111211111312133313331333133313331333133321123231333133313223313233121   >>    C3123121111121111131213331333133313331333133313332112323133313331322331323312   <<    C31231211111211111312133313331333133313331333133321123231333133313223313233123   >>      C31231211111211111312133313331333133313331333133321123231333133313223313233122   >>