For dict.txt:
Word length	Number of words of that length
0		0
1		52
2		160
3		1420
4		5272
5		10228
6		17705
7		23869
8		29988
9		32403
10		30878
11		26014
12		20462
13		14939
14		9765
15		5925
16		3377
17		1813
18		842
19		428
20		198
21		82
22		41
23		17
24		5