1 24 a
2 22 and
3 19 he
4 18 his
5 12 was
6 8 to
7 7 for
8 7 of
9 6 it
10 6 that
11 6 the
12 5 but
13 5 in
14 5 or
15 5 ther
16 4 at
17 4 ne
18 4 wel
19 4 were
20 4 with
21 3 by
22 3 ful
23 3 hym
24 3 nat
25 3 sheep
26 3 wolde
27 2 al
28 2 also
29 2 any
30 2 as
31 2 Cristes
32 2 ensample
33 2 good
34 2 him
35 2 hymselve
36 2 if
37 2 millere
38 2 no
39 2 preest
40 2 shepherde
41 2 so

As we can see in this analysis of the frequency of the words in the fragment of Chaucer's text, it is obviously function words the ones which prevail, showing that at this period English language was not more a syntectical and inflectional one. We can also observe that this loss of inflections and the regularisation of the subsisting ones, makes possible a higher repetition of words such as verb forms and the demonstrative. Furthermore, We want to highlight the copular verb "To be" (in the form was and were) as the other word more frequently used apart from function words(although it is precisely a word that works as linking particle, so as to say, with a grammatical function more than with a lexical one)