perl -e'$a="(.)"x15000;$_="a"x15000;/$a/;print "$15000\n";'

output:
a

##</code><code>##

perl -e'$b=unpack"b*",pack"H*","59dfce2d6b1664d3b26cd9969503";\
for(;$a<length$b;$a+=9){print+pack"b8",substr$b,$a,8;}'