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#!/usr/bin/perl -w

...
}
$m++;
printf "%04d%02d%02d-%04d%02d%02d\n",$y,$m,$d1,$y,$m,$d2;

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