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<!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">
   <defs>
      <filter id="gblur">
         <feGaussianBlur stdDeviation="0" />
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   <text fill="green" y="60">This should not crash.</text>
</svg>