Someone

<channel>
  <global>
    <field id="1">abc</field>
    <field id="2">def</field>
    <field id="3">ghi</field>
    <field id="4">jkl</field>
  </global>
  
  <products>
    
    <item type="static">abc</item>
    
    <item type="static">def</item>
    
    <item type="dynamic">
      <field id="1">abc</field>
      <field id="2">abc</field>
      <field id="3">abc</field>
    </item>
    
    <item type="static">ghi</item>
    
    <item type="dynamic">
      <field id="1">abc</field>
      <field id="2">abc</field>
      <field id="3">abc</field>
    </item>
  
  </products>
<channel>