title: How to use list in this example
body: <p>Lets say i have an array like that (I know that is not possible on c#):</p>
  
  <pre><code>string[,] arr = new string[,]
  {
      {"expensive", "costly", "pricy", 0},
      {"black", "dark", 0}
  };
  </code></pre>
  
  <p>So how I can add this items on list and how I can add new item between <strong>"pricy"</strong> and <strong>0</strong>? I couldn't find any example on the net.</p>