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A robot has to deliver three identical packages to locations A, B, and C in an office environment. The robot starts in location 4 holding two packages, A and B. Package C is at location 8. Each package has a location where it needs to be dropped. The environment is a line of 10 squares, numbered from 1 to 10. The robot can move along the line of squares in either direction, one square at each step, and can pick up or drop packages in the square where the robot is. Specify the state space representation of the problem (not its solution) by specifying what is in a state, the initial state, the goal test, and the actions. Be precise and consistent.