"The most common letter I get is from folks who hadn't been aware, saw the light," he said.

He assigned the highest number of taps to less common letters.

Means sharing a common letter are not significantly different.

For example the most common letter in English is the letter "e".

On the island of Paros he received instruction in the "common letters."

A list of the most to least common letters in the English language.

The next most common letter is t, so he assigned that a single dah.

It is the 6th least common letter in the English language, with a frequency of about 1.03% in words.

Three letter rule source of some common English silent letters.

The most common letters in Hungarian are e and a.