*** ORIGINAL ***
<h1>HTM1</h1>
<a href="http://bad1.com/">http://bad1.com/</a>
<a href="http://good.com/">http://good.com/</a>
<a href="http://bad2.com/">http://bad2.com/</a>

*** MODIFIED ***
<h1>HTM1</h1>
<span class="bad-url">[404 Not Found]</span>
<a href="http://good.com/">http://good.com/</a>
<span class="bad-url">[404 Not Found]</span>

*** ORIGINAL ***
<h1>HTM2</h1>
<a href="http://good.com/">http://good.com/</a>
<a href="http://bad2.com/">
    http://bad2.com/
</a>
<a href="http://good.com/">
    http://good.com/
</a>
<a 
    href="http://bad3.com/"
>http://bad3.com/</a>
<a href="http://bad4.com/">http://bad3.com/</a>
<a href="http://bad4.com/">http://bad4.com/</a>

*** MODIFIED ***
<h1>HTM2</h1>
<a href="http://good.com/">http://good.com/</a>
<span class="bad-url">[404 Not Found]</span>
<a href="http://good.com/">
    http://good.com/
</a>
<span class="bad-url">[404 Not Found]</span>
<a href="http://bad4.com/">http://bad3.com/</a>
<span class="bad-url">[404 Not Found]</span>