in reply to specific numbers of digits
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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