{"subtask_index": 0, "subtask": "End"}
{"subtask_index": 1, "subtask": "Release socket with the left hand"}
{"subtask_index": 2, "subtask": "Put down plug with the right hand"}
{"subtask_index": 3, "subtask": "Press and hold the socket with the left hand"}
{"subtask_index": 4, "subtask": "Unplug plug with the right hand"}
{"subtask_index": 5, "subtask": "null"}