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<script>
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document.addEventListener('DOMContentLoaded', function() {
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var x = new ResizeObserver(function(a1, a2) { })
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var a = document.createElementNS('http://www.w3.org/1999/xhtml', 'l')
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x.observe(a, { })
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x.disconnect()
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x.observe(a, { })
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})
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</script>
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