Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE available_policies (policy_type_code VARCHAR)
### Question:
Find the policy type used by more than 4 customers.
### Answer:
SELECT policy_type_code FROM available_policies GROUP BY policy_type_code HAVING COUNT(*) > 4