C1111233131211111211113313331333133313331333133313331331121111331121133111   >>    C111123313121111121111331333133313331333133313331333133112111133112113311   <<    C1111233131211111211113313331333133313331333133313331331121111331121133113   >>      C1111233131211111211113313331333133313331333133313331331121111331121133112   >>