[Lucene.Net] Decoding an index

[Sean Newham]

Hi,
I'm new to Lucene, and I was wondering if there was a quick, code way 
(preferably in c#, but I'll take python or java) of getting the list of most 
common search queries out. I've done a google, and found Luke (which is cool) 
and may start looking through its code as it clearly must be doing this 
somewhere, but my next step is to look through the Lucene docs. Any help would 
be appreciated, including telling me which docs to read, etc.
Best wishes,
Sean