<xsl:variable name="nodes" select="Слово"/>

 <xsl:call-template name="doRow">
     <xsl:with-param name="currentRow" select="1" />
     <xsl:with-param name="totalRow" select="string-length($nodes)" />
     <xsl:with-param name="nodes" select="$nodes"/>
</xsl:call-template>
 

<xsl:template name="doRow">
   <xsl:param name="currentRow"/>
   <xsl:param name="totalRow"/>
   <xsl:param name="nodes"/>    


   <xsl:if test="$currentRow < $totalRow">
  
   <xsl:text  disable-output-escaping="yes">  
   <![CDATA[
   <!-- <xsl:value-of select='substring($nodes,string-length($nodes)-$currentRow, 1)'/> -->
    <br/>
    
]]>
   
   </xsl:text>


<xsl:value-of select="$currentRow"/>

      <xsl:call-template name="doRow">
           <xsl:with-param name="currentRow" select="$currentRow + 1" />        
           <xsl:with-param name="totalRow" select="$totalRow" />       
          </xsl:call-template>

   </xsl:if>
</xsl:template>