title: Regex: Match all combinations of 2 digits except for specified
body: <p>I need two regexes:</p>
  
  <ol>
  <li>Match all two-digit combinations except for "00" (so 01, 02, ... 99 is fine)</li>
  <li>Match all two-digit combinations except for "00" and "01" (so 02, 03, ... 99 is fine)</li>
  </ol>
  
  <p>I tried with something like <code>^(00)([0-9][0-9])</code> for the first one, but it doesn't work. Any help is appreciated.</p>