Electronic Communications and Control (EComCon) Corporation produces cell phones. The company outsources its marketing (MKT), payroll (PAY), health care and retirement (HCR) benefits programs.

EComCon also outsources its production to firms A, B, and C, which are located in three different geographic locations. These production contractors are also responsible final delivery to local retail outlets.

Since these manufacturers do not maintain their own fleet of trucks, this task is further outsourced to several delivery subcontractors (DEL).

Construct the “wiring diagram” for this contractual network.