Create a random string of words of len(initials)

def string_for_initials(dictionary, initials):
    """Create a random string of words of len(initials)"""
    string_to_print = ""
    for letter in initials:
        word = get_random_word(dictionary, letter.lower())
        string_to_print += "{} ".format(word)

    return string_to_print.strip()