Well, the OP said

proper output would look like: 

ABC 123, 334, 442
FTE 442
HHR 443
NTR 554, 554

[download]

Note the last line, which shows a duplicate number.

I have seen the OPs reply that confirms that duplicates are indeed unwanted. The sample output seemed to indicate the opposite.

Anno

In reply to Re^3: hash of hashes by Anno
in thread hash of hashes by volcan

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