=== XML =================================
<root>
    <one/>
    <two/>
    <three/>
    <four/>
    <five/>
</root>  
========================================

=== XSLT ================================
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output method="text" encoding="utf-8" omit-xml-declaration="yes"/>

    <xsl:template match="/root">
        <xsl:for-each select="five">
            <xsl:for-each select="preceding-sibling::*[position() > 1]">
                <xsl:value-of select="name()" />
                <xsl:text> </xsl:text>
            </xsl:for-each>
        </xsl:for-each>
    </xsl:template>

</xsl:stylesheet>  
========================================

=== Вывод ===============================
 one two three 
========================================