def create_node(name: str, phone: str, next: dict = None):
    return {"name": name, "phone": phone, "next": next}


def create_linked_list(data: list[dict]) -> dict:
    if data is None or len(data) == 0:
        raise ValueError("Список пустой!")
    
    base = create_node(**data[0])

    current = base
    for value in data[1:]:
        current['next'] = create_node(**value)
        current = current['next']
    
    return base


def ll_insert():
    pass


def ll_find(head: dict, name: str) -> str | None:
    if head is None:
        raise ValueError("Словарь пустой!")
    
    current = head
    while current['next'] is not None:
        if current['name'] == name:
            return current['name']
    return None


def ll_delete():
    pass


def ll_list_all():
    pass


def ll_print_all():
    pass