Add a negative lookahead assertion to make sure the next character is not a digit: /\d{5}(?!\d)/ 

---
print map { my ($m)=1<<hex($_)&11?' ':'';
$m.=substr('AHJPacehklnorstu',hex($_),1) }
split //,'2fde0abe76c36c914586c';

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In reply to Re: specific numbers of digits by pfaut
in thread specific numbers of digits by emichswimr

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