new_contents: #!/usr/bin/env python3
  '''
  Given a common phrase, return False if any individual word in the phrase contains duplicate letters. 
  Return True otherwise.
  '''
  def no_duplicate_letters(phrase):
  	val = [phrase]
  	nlst = ' '.join(val).split()
  	st = [len(i) for i in nlst]
  	ev = [len(set(i)) for i in nlst]
  
  	return st == ev
  
  #Alternative solutions
  def no_duplicate_letters(phrase):
    return all(i.count(j)==1 for i in phrase.split() for j in i)
  
  def no_duplicate_letters(phrase):
  	return all([len(set(i))==len(i) for i in phrase.split(' ')])
  
subject: Create NoDuplicateLetters-Hard.py