title: count and print the number of occurences
body: <p>I have some files as shown below</p>
  
  <pre><code>GLL  ALM  654-656  654  656 
  SEM  LYG  655-657  655  657
  SEM  LYG  655-657  655  657 
  ALM  LEG  656-658  656  658 
  ALM  LEG  656-658  656  658  
  ALM  LEG  656-658  656  658  
  LEG  LEG  658-660  658  660 
  LEG  LEG  658-660  658  660
  </code></pre>
  
  <p>The value of GLL is 654. The value of ALM is 656. In the same way, 4th column represents the values of first column. 5th column represents the values of second column.I would like to count the unique occurrences of each number in the fourth and fifth column.</p>
  
  <p>Desired output</p>
  
  <pre><code>654 GLL 1
  655 SEM 1
  656 ALM 2
  657 LYG 1
  658 LEG 2
  660 LEG 1
  </code></pre>