print qr(\s+execution\s+time\s+\(\s+millis\s+\)\s+\:\s+);

__output__

(?-xism:\s+execution\s+time\s+(\s+millis\s+)\s+:\s+)

##</code><code>##

print join ' ', map { chomp; (split)[-1] } grep /\s+\d+$/, <DATA>;
print " Done!\n"