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<title>Test for dynamic removal of ruby frames</title>
<link rel="author" title="Xidorn Quan" href="https://www.upsuper.org">
<link rel="author" title="Mozilla" href="https://www.mozilla.org">
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<p>'a' and 'b' should be paired with 'x' and 'y' respectively:</p>


<p><rb>a</rb><rb>b</rb><rt>x</rt><rt>y</rt></p>
<p><rb>a</rb><rb>b</rb><rt>x</rt><rt>y</rt></p>
<p><rb>a</rb><rb>b</rb><rt>x</rt><rt>y</rt></p>

<p><rb>a</rb><rb>b</rb><rt>x</rt><rt>y</rt></p>
<p><rb>a</rb><rb>b</rb><rt>x</rt><rt>y</rt></p>

<p>'ab' should be paried with 'xy':</p>

<p><rbc>ab</rbc><rt>xy</rt></p>
<p><rb>ab</rb><rtc style="letter-spacing: 1px">xy</rtc></p>