<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">

<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
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    <filter id="f1">
      <feDropShadow stdDeviation="-1" />
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    <filter id="f2">
      <feDropShadow stdDeviation="-1 -1" />
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    <filter id="f3">
      <feDropShadow stdDeviation="1 -1" />
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    <filter id="f4">
      <feDropShadow stdDeviation="-1 1" />
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</svg>