Where questions:  First two words are not very informative...

 592 Where can
 254 Where is: This is where the prototypical location questions are
               such as "Where is Mt. Rushmore" and "Where is Urdu spoken"
 181 Where did
 113 Where does
  81 Where was
  72 Where do
  61 Where are
  45 Where's
  23 Where on
  15 Where in
  14 Where would
  13 Where were
  10 Where and
   4 Where will
   4 Where could
   3 Where online
   2 Where to
   2 Where the
   2 Where should
   2 Where must
   2 Where have
   1 Where quality
   1 Where might
   1 Where has
   1 Where exactly
   1 Where came

More useful is first 4:

  Questions about getting access to information/products:
 383 Where can I find
  99 Where can I get
  19 Where do I find
  15 Where can I read
  13 Where on the Internet
  13 Where can I buy
  12 Where is the best
  10 Where can I learn
   7 Where can I go
   7 Where can I download
   6 Where can you get
   6 Where can you find
   4 Where on the web
   4 Where do you find
   4 Where can I purchase
   3 Where would you find
   3 Where would I find
   3 Where online can I
   3 Where could I find
   3 Where can find information
   3 Where can I take
   3 Where can I see
   3 Where can I look
   3 Where do you go
   2 Where on the Web
   2 Where is there information
   2 Where do I go
   2 Where can you buy
   2 Where can one find
   2 Where can I locate
   2 Where can I access

  Questions about the origins of words:
  14 Where did the word (X come from/originate)
  12 Where did the term 
   7 Where does the phrase
   7 Where does the name
   7 Where did the name
   6 Where does the surname
   4 Where does the word
   3 Where does the expression
   3 Where did the phrase
   2 Where does the term
   2 Where does the saying
   2 Where did the saying

  All others with frequency > 1  
  11 Where is the largest
  10 Where was the first
   8 Where is the world's
   7 Where is the oldest
   7 Where is the most
   4 Where in the Bible
   4 Where and when was
   3 Where is the coldest
   3 Where would you be
   3 Where was the Battle
   3 Where is a good
   3 Where are the most
   3 Where and when did
   2 Where was the 1968
   2 Where is the only
   2 Where is the human
   2 Where is the famed
   2 Where is the Internet
   2 Where does the U.S.
   2 Where did the first
   2 Where did the band
   2 Where are the busiest
   2 Where are a dog's

  Most of the typical location questions are in the
  single frequency group.