title: How to match any word from a word group
body: <p>I'm trying to create a pattern that would identify a money in a string. My expression so far is:</p>
  
  <pre><code>(\d{1,3}[\.,\s]{0,2})*\d{3}[\.,\s]{0,2}\d{0,2}[\s]{0,2}[zl|zł|zlotych|złotych|pln|PLN]{0,1}
  </code></pre>
  
  <p>and my main problem is with the last part: [zl|zł|zlotych|złotych|pln|PLN], which should find one of the national notations for money value (sth like $ or usd or dollars) but I'm doing it wrong, since it also matches something like '108.1 z'.<p> Is it possible to change the last part, so that it would match only expressions that contain the whole expressions like 'zl', 'pln' and so on, and not single letters? </p>