title: Regex won't allow space in beginning of word
body: <p>can any one know how to don't let input in the first character space? Trying to do it on .net with regex and still can't find solution.
  Example (pretend that _ is space now):</p>
  
  <ul>
  <li><code>_Word</code> - bad</li>
  <li><code>Word</code> - good</li>
  <li><code>Word word</code> - good</li>
  <li><code>_word word</code> - bad</li>
  <li><code>__word</code> - bad</li>
  </ul>