C1111233131211111211113313331333133313311211111333133313331333132323323121   >>    C111123313121111121111331333133313331331121111133313331333133313232332312   <<    C1111233131211111211113313331333133313311211111333133313331333132323323123   >>      C1111233131211111211113313331333133313311211111333133313331333132323323122   >>