<p><del>This is a test</del></p>

<p>~<del>This is another test</del>~</p>

<p><del>This is yet another test</del>~</p>

<p>~~ This is a test of it NOT working ~~</p>

<p>~~<br />
This<br />
is<br />
a<br />
<strong>multiline</strong><br />
test<br />
~~</p>

<p>This is an <del><em>inline</em> <strong>strikethrough</strong></del> test</p>

<p>This is an ~~escaped~~ strikethrough.</p>

<p>This is a <del>strikethrough with a ~ in the middle</del></p>

<p>I <del>don’t even</del>~ have an extra tilde.</p>

<p>This should ~~not be struck.</p>

<p>This <del>is a complex <em>strike</em> through *test ~~with nesting</del> involved* here~~.</p>
