Given document-D1: containing words (w1,w2,w3) 
and document D2 and words (w2,w3..) 
and document Dn and words ( w1,w2, wn)

Can I structure my data in big table to answer the questions like:
which words occur most frequently with w1, 
or which words occur most frequently with w1 and w2.

What I am trying to achieve is to find the third word Wx (suggestion) which ocures most frequently in documents togehter with given words W1 and W2

I know the solution in SQL, but is it possible with google-big table?

I know I would have to build my indices by myself, the question is how should I structure them to avoid index explosion

thanks 
almir