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

  <stx:template match="/*">
    <root>
      <stx:value-of select="starts-with('auto','au')"/>
      <stx:text>:</stx:text>
      <stx:value-of select="starts-with('auto','ut')"/>
      <stx:text>:</stx:text>
      <stx:value-of select="starts-with('moto',concat('mo','to'))"/>
      <stx:text>:</stx:text>
      <stx:value-of select="starts-with('moto','')"/>
      <stx:text>:</stx:text>
      <stx:value-of select="starts-with('','to')"/>
      <stx:text>:</stx:text>
      <stx:value-of select="starts-with('','')"/>
    </root>
  </stx:template>
  
</stx:transform>