def _fix_contractions(token_strings):
    """
    Join any "n't" tokens with the previous word. All other contractions will be handled by the
    MosesTokenizer.
    """
    fixed_token_strings = []

    for i, token_string in enumerate(token_strings):
        if i > 0 and token_string == "n't":
            fixed_token_strings[-1] += "n't"
        else:
            fixed_token_strings.append(token_string)

    return fixed_token_strings