{"task_index": 0, "task": "Pick up the red block and put in the target place."}
{"task_index": 1, "task": "Pick up the green block and put in the target place."}
{"task_index": 2, "task": "Pick up the blue block and put in the target place."}
{"task_index": 3, "task": "Pick up the yellow block and put in the target place."}