C11112331312111112111133133313331333133313331333133313331333133313233212131121   >>    C1111233131211111211113313331333133313331333133313331333133313331323321213112   <<    C11112331312111112111133133313331333133313331333133313331333133313233212131123   >>      C11112331312111112111133133313331333133313331333133313331333133313233212131122   >>