Letter Frequency Analysis:

[an error occurred while processing this directive] Letter Frequency Analysis:

Quite possibly the most valuable tool to a codebreaker is the ability to figure out if some piece of text is bona fide language. Fortunately, English (and others) follow patterns of letter frequency. These can be extremely useful in determining what the plaintext of a message is.

Here is a table of English Letter Frequency.

These letters often go together. These are known as digrams.

Trigraphs are much like digraphs, but for three letters. Here are the most often seen trigraphs:

Letters that are often doubled, as in sniff:

The most common letters to end a word:

And finally, the most common words in the English language:

the
of
are
I
and
you
a
can
to
he
her
that
in
was
is
has
it
him
his