# Frequencies of Character Pairs

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Frequencies of character pairs provide important clues for cryptanalysis. In practice you would try to obtain text samples from actual communications or, alternatively, use typical texts. This Demonstration visualizes frequencies of pairs of letters using words from the built-in dictionary in *Mathematica*. Tooltips give these frequencies.

Contributed by: Michael Schreiber (March 2011)

Open content licensed under CC BY-NC-SA

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"Frequencies of Character Pairs"

http://demonstrations.wolfram.com/FrequenciesOfCharacterPairs/

Wolfram Demonstrations Project

Published: March 7 2011