Count number of different letters in text and print frequency table (case insensitive)
Count all repetitions of the same string in the list of strings patterns. The result is printed in alphabetical order
Count number of different two letter words in text and print frequency table this assumes the encoded message has preserved punctuation and spaces (case insensitive)
Count number of different three letter words in text and print frequency table this assumes the encoded message has preserved punctuation and spaces (case insensitive)
Substitution cypher
example:
print translit("HELLO WORLD","zyxwvutsrqponmlkjihgfedcba")
svool dliow