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<html xmlns="http://www.w3.org/1999/xhtml" class="reftest-wait">
<head>
<script>
function boom1()
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document.getElementById("mfenced3").appendChild(document.getElementById("div4"));
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document.getElementById("sup1").appendChild(document.getElementById("mo2"));
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<body onload="setTimeout(boom1, 30);">
<div><math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
<msup id="sup1">
<mi>b</mi>
<mn>2</mn>
</msup>
</math></div>
<div><math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
<mi>j</mi>
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<mn>55</mn>
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<mo> ∫ </mo>
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