def getAvailableLetters(lettersGuessed: list) -> str:
    """Returns letter in alph not guessed

    Args:
      lettersGuessed: what letters have been guessed so far

    Returns:
        str: comprised of letters that represents what letters have not yet
        been guessed.
    """
    # Created alph 1, using list comprehesions
    # 97 is 'a' in ASCII code
    # compress_alp = ''.join([chr(97 + i) for i in range(26)])

    # Using alph 1
    # This not using ternary operator, but list comp sintax:
    # [return value] [for loop] [if filter]
    # return ''.join([e for e in compress_alp if e not in lettersGuessed])    

    # Or use oneline return
    # [return value] [ for loop [[r value] [for loop] ] [if filter]
    return ''.join(
        e for e in [chr(97 + i) for i in range(26)] if e not in lettersGuessed
        )