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<!DOCTYPE html>
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<html><head>
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<style>
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*::after { content:"anonymous text"; }
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*::before { content:"before text"; }
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</style>
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</head>
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<body>
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<ol style="overflow: hidden; float: right; -moz-column-count: 3;">
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<span style="overflow: auto; float: left;"></span>
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</ol>
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</body>
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</html>
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