article_snippet: The process works by looking for two characters that commonly appear together but then generating a third letter that does not.
article_snippet: The same approach is used to generate the third character using the second and third letter and so on.
article_snippet: The graph above shows the distribution of letters following 'ca' in Tale of Two Cities by Charles Dickens. 
article_snippet: Dr Clements' took, two letters like 'ca' may appear together in a piece of text, then the chance that they are followed by the letter 'r' is 278/1397 for example.
article_snippet: However the chance of those two letters being followed by the letter 'f' or 'x' is far less in a piece of text.