<patternlist>
  <patternpairs totalbits="18" postbits="9">
    <prepatterns>
        <data>0xfc 1....... </data>  <!-- pop25 sx,# -->
        <data>0xdd 0x9e</data>       <!-- ret5 lp -->
    </prepatterns>
    <postpatterns>
       <data>0xfc 0....... </data>  <!-- push25 sx,# -->
       <funcstart/>
    </postpatterns>
  </patternpairs>
</patternlist>