The following fifty words making of fourty percent of all words used.

Word Pronunciation Frequency
the strong /ðiː/ weak /ðə/ 7.14%
of /əv/  /ɑːv/ 4.16%
and strong /ænd/ weak /ənd/ 3.04%
to /tuː/ or  /tʊ/ or  /tə/ 2.60%
in /ɪn/ 2.27%
a /ə/ or // 2.06%
is strong /ɪz/ weak /z/ /s/ 1.13%
that /ðæt/ 1.08%
for strong /fɔːr/ weak /r/ // 0.88%
it /ɪt/ 0.77%
as /æz/ or /əz/ 0.77%
was /wɑːz/ weak /wəz/ 0.74%
with /wɪð/ 0.70%
be strong /biː/ weak /bi/ // 0.65%
by /baɪ/ 0.63%
on /ɑːn/ 0.62%
not /nɑːt/ 0.61%
he strong /hiː/ weak /hi/ /i/ 0.55%
i // 0.52%
this /ðɪs/ 0.51%
are 0.50%
or 0.49%
his 0.49%
from 0.47%
at 0.46%
which 0.42%
but 0.38%
have 0.37%
an 0.37%
had 0.35%
they 0.33%
you 0.31%
were 0.31%
their 0.29%
one 0.29%
all 0.28%
we 0.28%
can 0.22%
her 0.22%
has 0.22%
there 0.22%
been 0.22%
if 0.21%
more 0.21%
when 0.20%
will 0.20%
would 0.20%
who 0.20%
so 0.19%
no 0.19%
 TOTAL 40.52%