<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<!DOCTYPE gml SYSTEM "http://www.gamgi.org/dtd/gamgi.dtd">
<!-- perfect tetrahedrons: offset = 0.25 without PBC -->
<!-- perfect dodecahedrons: offset = 0.00 with PBC -->
<gml>
  <cluster>
    <atom element=" C" x="-0.2500" y="-0.25" z="-0.25"/>
    <atom element=" O" x=" 0.2500" y=" 0.25" z="-0.25"/>
    <atom element="Si" x=" 0.2500" y="-0.25" z=" 0.25"/>
    <atom element=" N" x="-0.2500" y=" 0.25" z=" 0.25"/>
  </cluster>
</gml>
