C1111233131211111211113313331333133313311211111133133313331333132322133311211   >>    C111123313121111121111331333133313331331121111113313331333133313232213331121   <<    C1111233131211111211113313331333133313311211111133133313331333132322133311213   >>      C1111233131211111211113313331333133313311211111133133313331333132322133311212   >>