title: City and State regex pattern
body: <p>User should able to input city and state either by city coma state or city space state.  I am trying to solve an issue. with this regex pattern.</p>
  
  <pre><code>/^[A-Za-z]+(\s?)+[,\s](\s?)+[A-Za-z]{2,}$/
  </code></pre>
  
  <p>All of the following inputs should return true.  But the regex fails some of them.</p>
  
  <blockquote>
    <p>New york, NY  true</p>
    
    <p>New york NY  <strong>false</strong></p>
    
    <p>Seattle WA  true</p>
    
    <p>Seattle, WA  true</p>
    
    <p>Winston Salem, NC  <strong>false</strong></p>
    
    <p>Winston Salem NC  <strong>false</strong></p>
  </blockquote>