def longest_word(word1, word2, word3):
	if len(word1) >= len(word2) and len(word1) >= len(word3):
		word = word1
	elif len(word2)>= len(word3):
		word = word2
	else:
		word = word3
	return(word)

print(longest_word("chair", "couch", "table"))
print(longest_word("bed", "bath", "beyond"))
print(longest_word("laptop", "notebook", "desktop"))