def read_conll_file(conll_file_path):
    """
    Reads a CONLL-2009 file and returns its contents as a list of (form, lemma, pos) tuples.
    :param conll_file_path:
    :return:
    """
    tuples = []
    with open(conll_file_path, 'r') as file:
        for line in file:
            if line.strip():
                rows = line.split("\t")
                form = rows[1]
                lemma = rows[2]
                pos = rows[4]
                tuples.append((form, lemma, pos))
    return tuples