def find_modified_cluster(clusters, added_items):
    """
    Method to find cluster that changed when appending an item
    :param clusters: List of clusters of chips
    :param added_items: Item(s) that were added to the board
    :return: clusters in which added item is found
    """
    changed_clusters = []
    for item in added_items:
        for cluster in clusters:
            if item in cluster and cluster not in changed_clusters:
                changed_clusters.append(cluster)
    return changed_clusters