title: How to check whether entry in one row appears in another row but order of column values changed?
body: <p>If I have some dataframe with Firs Name and Last Name columns, how can I check whether below case exist in dataframe and therefore extract all of the such cases:</p>
  <div class="s-table-container">
  <table class="s-table">
  <thead>
  <tr>
  <th>First Name</th>
  <th>Last Name</th>
  </tr>
  </thead>
  <tbody>
  <tr>
  <td>Albert</td>
  <td>Einstein</td>
  </tr>
  <tr>
  <td>Einstein</td>
  <td>Albert</td>
  </tr>
  </tbody>
  </table>
  </div>
  <p>?</p>
  <p>In short, how can I check whether the criss cross cases exist in dataframe? The task at hand that I am trying to tackle is to locate all of the duplicates in terms of names in a dataframe. I am consider other cases (below), but they can be tackled separately.</p>
  <ul>
  <li>Different last names, same first name</li>
  <li>Same last name, different first name</li>
  <li>Same last name, same first name</li>
  </ul>
  <p>Thanks!</p>