<rule name="Redirect "en"" stopProcessing="true">
<match url="(.*)/([a-zA-Z]{2})/(.*)" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="true">
<add input="{Redirects:{REQUEST_URI}}" pattern="(.+)" />
</conditions>
<action type="Redirect" url="{R:2}{C:1}" appendQueryString="false" />
</rule>

<rule name="Redirect "nl-be"/"fr-be"" stopProcessing="true">
<match url="/([a-zA-Z]{2}-[a-zA-Z]{2})/(.*)" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="true" />
<action type="Redirect" url="/{R:1}/{C:1}" />
</rule>

<rewriteMaps>
<rewriteMap name="Redirects">
<add key="/maptest" value="/flights" />
</rewriteMap>
</rewriteMaps>