C1111233131211111211113313331333133313331312331333133313123121211111221131   >>    C111123313121111121111331333133313331333131233133313331312312121111122113   <<    C1111233131211111211113313331333133313331312331333133313123121211111221133   >>      C1111233131211111211113313331333133313331312331333133313123121211111221132   >>