I took a few hundred words in English starting with the letter "G" and few starting with letter "E". Hopefully i could get some pattern or rule in the way the letter after these letters was arranged. I managed to get as many as 51 rules for the way the letters appeared. The rules were all generated just based on the occurrence of a particular alphabet at a particular position.
The most effective and pervasive rule was if Letter2(A) => D(G). So in my sample of words, the words starting with letter "G" had lot of words with second letter as "A".
If i made the search more knowledgeable by putting in knowledge of vowels and consonants, more rules will turn up with better patterns. This might be even more interesting to try and find patterns in sentences.