title: Excel remove more than 2 duplicate records from a column
body: <p>Excel has function to remove duplicates but what if i want only first 2 records of each value in a column.</p>
  
  <p>E.g. Sheet</p>
  
  <pre><code>    Email           Value
      abc@gmail.com   23
      xyz@yahoo.com   24
      sns@abc.com     75
      abc@gmail.com   51
      lkj@asd.com     85
      abc@gmail.com   95
      xyz@yahoo.com   52
      uhk@asj.com     95
      uhk@asj.com     42
  </code></pre>
  
  <p>Expected Result Sheet</p>
  
  <pre><code>Email           Value
  abc@gmail.com   23
  xyz@yahoo.com   24
  sns@abc.com     75
  abc@gmail.com   51
  lkj@asd.com     85
  xyz@yahoo.com   52
  uhk@asj.com     95
  uhk@asj.com     42
  </code></pre>
  
  <p>Note that "<strong>abc@gmail.com   95</strong>" record which was third entry for the email id was removed. All other records has either one or two entries. No record is allowed for more than two entries. I have thousands of these in a sheet and need to only have first two entries of each email. Can anyone tell me how i can i delete more than 2 records as in above example?</p>