Word Frequency Tool 3

3 letter words 612 20.0%
4 letter words 510 16.7%
2 letter words 474 15.5%
5 letter words 397 13.0%
6 letter words 266 8.7%
7 letter words 236 7.7%
8 letter words 193 6.3%
9 letter words 115 3.8%
1 letter words 93 3.0%
10 letter words 72 2.4%
11 letter words 37 1.2%
12 letter words 22 0.7%
13 letter words 22 0.7%
14 letter words 5 0.2%
15 letter words 3 0.1%
16 letter words 1 0.0%

Here the list is sorted by frequency, but you can display it by word length:

1 letter words 93 3.0%
2 letter words 474 15.5%
3 letter words 612 20.0%
4 letter words 510 16.7%
5 letter words 397 13.0%
6 letter words 266 8.7%
7 letter words 236 7.7%
8 letter words 193 6.3%
9 letter words 115 3.8%
10 letter words 72 2.4%
11 letter words 37 1.2%
12 letter words 22 0.7%
13 letter words 22 0.7%
14 letter words 5 0.2%
15 letter words 3 0.1%

Underneath this, there is a complete breakdown, with the words themselves grouped and listed by length.