C31231211111211111312133313331333133313331333133321123231323331323133112233111   >>    C3123121111121111131213331333133313331333133313332112323132333132313311223311   <<    C31231211111211111312133313331333133313331333133321123231323331323133112233113   >>      C31231211111211111312133313331333133313331333133321123231323331323133112233112   >>