How many double letter words start at the beginning?

Here's how to think about this:

* Double Letter Words: Words with two of the same letter in a row.

* Start at the Beginning: The double letters must be at the beginning of the word.

Let's consider the English alphabet:

* AA, BB, CC, DD, EE, FF, GG, HH, II, JJ, KK, LL, MM, NN, OO, PP, QQ, RR, SS, TT, UU, VV, WW, XX, YY, ZZ

Now, we need to figure out which of these letter combinations form actual words:

* Book, door, look, room, see, too, will, wood

Therefore, there are 8 double letter words that start at the beginning.