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<rule name="redirect co.uk to /en" enabled="true">
                    <match url="(.*)" ignoreCase="true" />
                    <conditions>
                        <add input="{HTTP_HOST}" pattern="riskid.co.uk"/>
                    </conditions>
                    <action type="Redirect" url="http://www.riskid.nl/en/{R:1}" appendQueryString="true" redirectType="Permanent" />
                </rule>