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<html><head><style>h1 { text-decoration: underline;}h2 { text-decoration: underline red;}h3 { text-decoration: underline red double;}p { text-decoration: underline red double 5px;}</style></head><body><h1>Heading 1</h1><h2>Heading 2</h2><h3>Heading 3</h3><p>A paragraph.</p></body></html>