title: Take the Supersets of Arrays
body: <p>i have a column in a Snowflake table that returns arrays.</p>
  <p>Eg-</p>
  <pre><code>['A','U']
  ['A','P','U']
  ['A','P']
  ['P','U']
  ['M','S']
  ['S']
  </code></pre>
  <p>i need to remove the subsets and just take the supersets, so only</p>
  <pre><code>['A','P','U']
  ['M','S']
  </code></pre>
  <p>is there an easy way to do this?</p>