title: Regex to not start characters and then follow with pattern
body: <p>How to write regex for pattern not start with char1 or char2 then followed by different string1 or string2 patterns.</p>
  <p>For example, not start with &quot; or ), then followed by cat and dog</p>
  <p>(cat &lt;- valid</p>
  <p>&quot;cat &lt;- invalid, because it starts with &quot;</p>
  <p>) dog &lt;- valid</p>
  <p>I tried <code>^(?!\&quot;|\))</code> to not start with.</p>