In the attempt to create a keymap for the twiddler that caters 
specifically to Smalltalk,
I did a digram analysis on all of the Smalltalk method bodies (VW. random 
image)
For comparison I include the ten most common digrams in English (corpus: 
The Cambridge encylopedia)

Smalltalk: se in er re el on te al en th nt st or
English:   in th he an er re on nd or es

Notice that 'self' makes a lot of the difference

In case you care, here is the top of the results, with percentages.
I elided all punctation digraphs except for '.' and ':' because they are 
interesting.


: 	2.28572
se	1.28356
in	1.22589
er	1.15395
.. 	0.981066
re	0.970116
el	0.911408
on	0.873386
te	0.859283
al	0.84533
en	0.8142
th	0.803529
nt	0.788988
st	0.756039
or	0.751325
le	0.734368
at	0.730698
de	0.696744
ec	0.659717
tr	0.642849
co	0.639527
an	0.62985
es	0.612803
ti	0.595647
he	0.583981
as	0.580262
ar	0.560629
me	0.56051
nd	0.556363
ct	0.52763
lf	0.504785
ne	0.498728
it	0.49473
to	0.486585
ed	0.469996
ue	0.468036
is	0.464456
ta	0.443451
la	0.440796
if	0.42719
ro	0.42717
ng	0.411775
ex	0.411257
ri	0.402973
ss	0.392381
il	0.392351
ra	0.387348
io	0.38527