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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>form fallback</title>
</head>
<body>
<math>
<mo stretchy="true">(</mo> <mspace height="3em" depth="3em"/> <mo stretchy="true">)</mo>
<mo stretchy="true">(</mo> <mspace height="3em" depth="3em"/> <mo stretchy="true">)</mo>
</math>
</body>
</html>