Write a function named sharealetter that takes one parameter, wordlist -- a list of words. create and return a dictionary in which each word in wordlist is a key and the corresponding value is a list of all the words in wordlist that share at least one letter with that word. there should be no duplicate words in any value in the dictionary.

horton = ['i','say','what','i','mean','and', 'i','mean','what','i','say']

output should be

{'i': ['i'], 'say': ['say', 'what', 'mean', 'and'], 'what': ['say', 'what', 'mean', 'and'], 'mean': ['say', 'what', 'mean', 'and'], 'and': ['say', 'what', 'mean', 'and']}