Show the customer ids and firstname without a credit card.
SELECT customer_id ,  customer_first_name FROM Customers EXCEPT SELECT T1.customer_id ,  T2.customer_first_name FROM Customers_cards AS T1 JOIN Customers AS T2 ON T1.customer_id  =  T2.customer_id WHERE card_type_code  =  "Credit"
SELECT customer_id ,  customer_first_name FROM Customers EXCEPT SELECT T1.customer_id ,  T2.customer_first_name FROM Customers_cards AS T1 JOIN Customers AS T2 ON T1.customer_id  =  T2.customer_id WHERE card_type_code  =  "Credit"
[{'customer_id': 1, 'customer_first_name': 'Aniyah'}, {'customer_id': 3, 'customer_first_name': 'Marcel'}, {'customer_id': 4, 'customer_first_name': 'Art'}, {'customer_id': 5, 'customer_first_name': 'Armani'}, {'customer_id': 6, 'customer_first_name': 'Kiel'}, {'customer_id': 7, 'customer_first_name': 'Izabella'}, {'customer_id': 8, 'customer_first_name': 'Elyssa'}, {'customer_id': 10, 'customer_first_name': 'Axel'}, {'customer_id': 11, 'customer_first_name': 'Frederic'}]