in reply to XML::Simple::XMLout() renaming tags

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

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In Section Seekers of Perl Wisdom