C312312111111331312111133133313331322331333133313113313223323121   >>    C31231211111133131211113313331333132233133313331311331322332312   <<    C312312111111331312111133133313331322331333133313113313223323123   >>      C312312111111331312111133133313331322331333133313113313223323122   >>