Examlex
Describe in your own words the language defined by this recursive definition:
< S > = @ | < W > | @ < S >
< W > = aab | aa < W > b
Billing Problem
Issues or errors encountered with the processing of charges for medical services or treatments.
Proper Fee
An appropriate or justified charge for a service or product, often determined by cost, market value, and quality.
Individual Charge
A specific amount of money billed to a person for a product or service.
Immediate Medical Help
Urgent assistance provided by healthcare professionals in response to a person's acute healthcare needs.
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