C11112331312111112111133133313331333132323213331333133313111322121123331   >>    C1111233131211111211113313331333133313232321333133313331311132212112333   <<    C11112331312111112111133133313331333132323213331333133313111322121123333   >>      C11112331312111112111133133313331333132323213331333133313111322121123332   >>