def read_clusters(path):
    """
    Reads clusters from a FCC output file.
    """

    clusters = []
    cl_file = open(path, 'r')
    for line in cl_file:
        # Cluster 8 -> 193 141 142 144 151 168 171 172 178
        models = map(int, line.split()[3:])
        clusters.append(models)

    return clusters