It makes for easier debugging to have all of those values in simple scalars. These can be examined easier to see if the values returned are as expected. I can plug in a new value while debugging to see how it affects the script.

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