C1111233131211111211113313331333133313331333133313331331121111331121131333121   >>    C111123313121111121111331333133313331333133313331333133112111133112113133312   <<    C1111233131211111211113313331333133313331333133313331331121111331121131333123   >>      C1111233131211111211113313331333133313331333133313331331121111331121131333122   >>