<stx:transform version="1.0" 
  xmlns:stx="http://stx.sourceforge.net/2002/ns"
  strip-space="yes">

  <stx:template match="/*">
    <root>
      <stx:value-of select="normalize-space('     ko    ')"/>
      <stx:text>:</stx:text>
      <stx:value-of select="normalize-space('koko ')"/>
      <stx:text>:</stx:text>
      <stx:value-of select="normalize-space(' ko  ko  ma ')"/>
      <stx:process-children/>
    </root>
  </stx:template>

  <stx:template match="node[1]">
    <stx:text>:</stx:text>
    <stx:value-of select="normalize-space()"/>
  </stx:template>
  
</stx:transform>