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<!doctype html>
<html>
<!--
-->
<body>
<iframe id="iframe" src="data:text/html;charset=US-ASCII,Goodbye World" srcdoc="Hello World"></iframe>
</body>
</html>
<!doctype html>
<html>
<!--
-->
<body>
<iframe id="iframe" src="data:text/html;charset=US-ASCII,Goodbye World" srcdoc="Hello World"></iframe>
</body>
</html>