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Source Code:

<!DOCTYPE html>
<html>
<head>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<title>This is Head tag</title>
</head>
<body>
<h1>This is Heading tag not head tag</h1>
<h2>This is Heading tag not head tag</h2>
<h3>This is Heading tag not head tag</h3>
</body>
</html>221

Output Preview :

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