I had a question like this a while ago, I'm not sure if it answers all your questions but take a look at this thread 

($_='kkvvttuubbooppuuiiffssqqffssmmiibbddllffss')
 =~y~b-v~a-z~s;                             print

[download]

In reply to Re: XML::Simple::XMLout() renaming tags by Cody Pendant
in thread XML::Simple::XMLout() renaming tags by alienhuman

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