As you are aware, E is the most common letter in the English alphabet, and it predominates in so marked an extent that even in a short sentence one would expect to find it most often.
This program calculates the relative frequency of occurence of a given string in the Unix online dictionary, /usr/dict/words. The string should contain only ordinary letters. Thus, if you type foo in the box, the program will return a count in the form a/b, where a is the number of times foo was found imbedded in a word in the dictionary, and b is the number of strings of length 3 in the dictionary. Do not include any spaces, tabs, or carriage returns in your string. This program is slow, the web is slow, barnyard is old and slow, and the dictionary is big, so be prepared to wait 20 seconds or so for your answer.