Stemming and Phonetic highlighting does not work in Solr

I am using Stemming and phonetic in Solr. Search works perfectly fine it searches required documents and give results but highlighting does not work in case of stemming and phonetic.it gives my required stemming and phonetic words in search. It highlights word like "run" but not running however it search the document which have word "running"

Please suggest

For this i have three fields - 
1.Content (stored = true)
2.Content_Stemming (stored = false)
3.Content_phonetic (stored = false)

My url looks like -

    http://example.com/solr/dev/select?q=content_stemming:run&hl=on&hl.simple.pre=%3Cem%3E
&hl.simple.post=%3C/em%3E&hl.field=content

Solr schema.xml

<field name="content" type="text_general" indexed="true" stored="true" multiValued="true"/>
<field name="content_phonetic" type="gaits_phonetic" indexed="true" stored="false" multiValued="true"/>
<field name="content_stemming" type="gaits_stemming" indexed="true" stored="false" multiValued="true"/></w:t>

<filter class="solr.KeywordRepeatFilterFactory" />
<filter class="solr.SnowballPorterFilterFactory"/>
<filter class="solr.RemoveDuplicatesTokenFilterFactory"/>