C1111233131211111211113313331333133313232313331333133311212111113112331   >>    C111123313121111121111331333133313331323231333133313331121211111311233   <<    C1111233131211111211113313331333133313232313331333133311212111113112333   >>      C1111233131211111211113313331333133313232313331333133311212111113112332   >>