title: Find lines with no matching numbers as their preceding line
body: <p>I am trying to find the lines in a file which non of the numbers in those lines are in their preceding line. This file has around 400000 lines. This is an example of the input file:</p>
  
  <pre><code>320 5120
  240 326 5120
  240 326 5120
  241 333 514
  240 326 5120
  240 326 5120
  320 5120
  240
  100 112
  240 326 5120
  240 326 5120
  320 5120 
  </code></pre>
  
  <p>The expected output results is:</p>
  
  <pre><code>241 333 514
  240 326 5120
  240
  100 112
  240 326 5120
  </code></pre>
  
  <p>So far I could find this command:</p>
  
  <pre><code>$ awk '!seen[$1]++' file 
  
  320 5120
  240 326 5120
  241 333 514
  100 112
  </code></pre>
  
  <p>which I can get the unique number of column 1 and I can do the same separately for other columns. Can I somehow get the information I want from this command? Any help would be appreciated.</p>