We analysed a fairly large collection of texts ourselves and these were the top ten words contained in it:
- The
- Of
- And
- To
- A
- In
- That
- I
- It
- He
There are also a number of other lists of common English words available. Try looking here:
http://www.google.com/search?q=%22co...rds%22+english
I hope that helps.
