C111123313121111121111331333133313331333133313331333133313232223132311211   >>    C11112331312111112111133133313331333133313331333133313331323222313231121   <<    C111123313121111121111331333133313331333133313331333133313232223132311213   >>      C111123313121111121111331333133313331333133313331333133313232223132311212   >>