<pooh>
After breakfast they went round to see Piglet and Pooh 
explained as they went that Piglet was a very small animal 
who did not like bouncing and asked Tigger who had been 
hiding behind trees said that a Tigger was only bouncy before 
breakfast and that as soon as they had had breakfast they became 
quiet and refined
</pooh>

<xsl:template match="pooh">
<wordcount>
 <xsl:for-each-group group-by="."
       select="for $w in tokenize(string(.), '\W+') return lower-case($w) ">
   <xsl:sort select="count(current-group() )" order="descending" />
   <word word="{current-grouping-key() }"
         frequency="{count(current-group() ) }"/>
 </xsl:for-each-group>
</wordcount>
</xsl:template>

• Group by words
• Sort in frequency of word appearance
• Output word and frequency in which it occurs