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+++ b/testing/web-platform/tests/css/css-writing-modes/text-combine-upright-value-digits3-001.html
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+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Writing Modes: text-combine-upright: digits 3 + two digits</title>
+<link rel="author" title="Masataka Yakura" href="https://google.com/+MasatakaYakura">
+<link rel="help" href="http://www.w3.org/TR/css-writing-modes-4/#text-combine-upright">
+<link rel="match" href="reference/vertical-ahem-1x1-ref.html">
+<link rel="mismatch" href="reference/horizontal-ahem-1x1-notref.html">
+<meta name="assert" content="'text-combine-upright: digits 3' combines two ASCII digits horizontally.">
+<meta name="flags" content="ahem">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.test {
+  writing-mode: vertical-rl;
+  font-size: 5em;
+  line-height: 1;
+  font-family: Ahem;
+}
+
+.tcy {
+  text-combine-upright: digits 3;
+}
+</style>
+</head>
+<body>
+
+<p>Test passes if there are 2 <strong>identical</strong> black squares.</p>
+
+<div class="test">
+  <p><span class="tcy">12</span></p>
+  <p>x</p>
+</div>
+
+</body>
+</html>
+\ No newline at end of file