title: What is the regular expression for a Spanish word?
body: <p>Regular expression languages use \B to include A..Z, a..z, 0..9, and _, and \b is defined as a word boundary.</p>
  
  <p>How can I write a regular expression that matches all valid Spanish words, including characters such as: á, í, ó, é, ñ, etc.?</p>
  
  <p>I'm using .NET.</p>