in reply to alphanumeric autoincrement?
...maybe I would create a hash with keys 1 to 26, values A to Z. Refer to each level of your tap with a numeric value, print out $hash{$numeric_value} for your naming scheme when alphas should be used.
I'm a little curious about what you'll be reading as an input to build this representation in your hash of arrays...and about what you'll be using the hashes for once you've got them built (are you creating some sort of report?) I could probably come up with a better suggestion if I understood the input...
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