C111123313331323113313331333133313331323131211113313121111331333133313331131211   >>    C11112331333132311331333133313331333132313121111331312111133133313331333113121   <<    C111123313331323113313331333133313331323131211113313121111331333133313331131213   >>      C111123313331323113313331333133313331323131211113313121111331333133313331131212   >>