C1111233131211111211113313331333133313331312331333133313123121211111333131   >>    C111123313121111121111331333133313331333131233133313331312312121111133313   <<    C1111233131211111211113313331333133313331312331333133313123121211111333133   >>      C1111233131211111211113313331333133313331312331333133313123121211111333132   >>