C11112331312111112111133133313331333132323213331333133313311233132233231   >>    C1111233131211111211113313331333133313232321333133313331331123313223323   <<    C11112331312111112111133133313331333132323213331333133313311233132233233   >>      C11112331312111112111133133313331333132323213331333133313311233132233232   >>