Where do StringA, StringB etc. come from? If they are in files, couldn't you store the file paths rather than their values? 
[1] => '/path/to/StringA/data'
[2] => '/path/to/StringB/data'

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In reply to Re^3: Minimize Hash Key Value Combinations by Arunbear
in thread Minimize Hash Key Value Combinations by AlexTape

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