C111123313121111121111331333133313331333132232233131211111211111121131211   >>    C11112331312111112111133133313331333133313223223313121111121111112113121   <<    C111123313121111121111331333133313331333132232233131211111211111121131213   >>      C111123313121111121111331333133313331333132232233131211111211111121131212   >>