An acute care facility treats non-emergency patients. Patients arrive according to an exponential interarrival-time distribution. Upon arrival they check in at a registration desk staffed by a single nurse. Registration time follows a triangular distribution. After completing registration, they wait for an available examination room. There are three identical rooms. Data show that patients can be divided into two groups with regards to different examination time. Each group has its own service distribution. Upon completion, patients are sent home. State the type and quantity of flowchart modules required to build the model