def street_not_in_use(street, items):
    """
    Check if elements of street are not in use already.
    For example [[(2, 'black'), (3, 'black'), (4, 'black'),(5, 'black)],[(3, 'black'), (4, 'black'), (5, 'black')]]
    would return false, because 3, 4 and 5 are already used
    :param street: List of elements that will be checked
    :param items: list of items that are already planned to be played (here 2,3,4,5)
    :return: True if new street can be played as well, otherwise false
    """
    for element in street:
        if element in items:
            return False
    return True