Hello!
i have this input file:

<Keywords>
  <Keyword name="a">
    <Synonym> x, y, z </Synonym>
  </Keyword>
  <Keyword name="b">
    <Synonym> v, w </Synonym>
  </Keyword>
<Keywords>

the result i need is:

<Keywords>
  <Keyword name="a">
    <Synonym>x</Synonym>
    <Synonym>y</Synonym>
    <Synonym>z</Synonym>
  </Keyword>
  <Keyword name="b">
    <Synonym>v</Synonym>
    <Synonym>w</Synonym>
  </Keyword>
</Keywords>

How can i do? Thanks!