<s>[INST] def find_characters(string, characters):
    """
    Find all occurrences of a list of characters in a string.

    Args:
    string (str): The string to search in.
    characters (list): A list of characters to search for.

    Returns:
    list: A list of tuples containing the found characters and their indices.
    """
    result = []
    for char in characters:
        index = string.find(char)
        while index != -1:
            result.append((char, index))
            index = string.find(char, index + 1)
    return result[/INST]