title: Get the full word by few letters, API?
body: <p>I have a problem: for example, we have a few letters: <code>b,o,s</code>. It's a letters from some word and they go in the same order as in word (in this case word is <code>books</code>). But, of course, it may be another word.</p>
  
  <p>So I need to get the list of the possible words, for example, lenght = 10. How can I do these? I feel, that the problem is close to crossword solving, so may be there is some services with API?</p>