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  <meta charset="UTF-8">
  <title>Bug 1099807 - Intra-level whitespace pairing</title>
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</head>
<body>
  <p><ruby>
    <rb>a</rb> <rb>b</rb>
    <rt>x</rt> <rt>y</rt>
  </ruby></p>
  <p><ruby>
    <rb>a</rb> <rb>b</rb>
    <rt>x</rt><rt>y</rt>
  </ruby></p>
  <p><ruby>
    <rb>a</rb><rb>b</rb>
    <rt>x</rt> <rt>y</rt>
  </ruby></p>
</body>
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