title: How to use scrapy to crawl multiple pages?
body: <p>All examples i found of Scrapy talk about how to crawl a single page, pages with the same url schema or all the pages of a website.
  I need to crawl series of pages A, B, C where in A you got the link to B and so on..
  For example the website structure is:</p>
  
  <pre><code>A
  ----&gt; B
  ---------&gt; C
  D
  E
  </code></pre>
  
  <p>I need to crawl all the C pages, but to get link to C i need to crawl before A and B.
  Any hints?</p>