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    copied!<p>It is very easy to achieve this - just build another list during your check instead of the counter and then check the size of the "innerlist". I called it currentSyncSet:</p> <pre><code> static void Main(string[] args) { List&lt;string&gt; playlists = new List&lt;string&gt;(){"more and you", "and us", "more"}; List&lt;string&gt; sync = new List&lt;string&gt;() { "more and you-20120312", "more and you-20120314", "more and you-20120313", "and us-20120313", "and us-20120314", "more-20120314", "more-20120313", "more-20120312" }; StringBuilder sb = new StringBuilder(); sb.Append("&lt;h2&gt;Playlist Information&lt;/h2&gt;\r\n"); HashSet&lt;string&gt; finalSyncResult = new HashSet&lt;string&gt;(); foreach (string play in playlists) { List&lt;string&gt; currentSyncSet = new List&lt;string&gt;(); foreach (string s in sync) { if (s.StartsWith(play)) { currentSyncSet.Add(s); } } foreach (var syncset in currentSyncSet) { if (currentSyncSet.Count &lt; 3) { finalSyncResult.Add("&lt;p class=\"bad\"&gt;" + syncset + "&lt;/p&gt;"); } else { finalSyncResult.Add("&lt;p class=\"good\"&gt;" + syncset + "&lt;/p&gt;"); } } } foreach (var result in finalSyncResult) { sb.Append(result + "\r\n"); } Console.WriteLine(sb.ToString()); Console.ReadKey(); } </code></pre> <p>The Output is then:</p> <pre><code>&lt;h2&gt;Playlist Information&lt;/h2&gt; &lt;p class="good"&gt;more and you-20120312&lt;/p&gt; &lt;p class="good"&gt;more and you-20120314&lt;/p&gt; &lt;p class="good"&gt;more and you-20120313&lt;/p&gt; &lt;p class="bad"&gt;and us-20120313&lt;/p&gt; &lt;p class="bad"&gt;and us-20120314&lt;/p&gt; &lt;p class="good"&gt;more-20120314&lt;/p&gt; &lt;p class="good"&gt;more-20120313&lt;/p&gt; &lt;p class="good"&gt;more-20120312&lt;/p&gt; </code></pre> <p>Greetings</p> <p><strong>Update 1:</strong> Sry, last time, i forgot, that you don't want to have duplicate entries - therefore i added a HashSet in this solution.</p>
 

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