C111123313121111121111331333133313331323231333133313331121211113313123123121   >>    C11112331312111112111133133313331333132323133313331333112121111331312312312   <<    C111123313121111121111331333133313331323231333133313331121211113313123123123   >>      C111123313121111121111331333133313331323231333133313331121211113313123123122   >>