example-flow.json

[
  {
    "id": "6cf71678.9a8418",
    "type": "tab",
    "label": "Difference",
    "disabled": false,
    "info": ""
  },
  {
    "id": "b5bab17f.f46c4",
    "type": "inject",
    "z": "6cf71678.9a8418",
    "name": "",
    "topic": "",
    "payload": "",
    "payloadType": "date",
    "repeat": "",
    "crontab": "",
    "once": false,
    "onceDelay": 0.1,
    "x": 100,
    "y": 80,
    "wires": [
      [
        "6bc398a4.8dd3c8"
      ]
    ]
  },
  {
    "id": "8f85ff54.f5bff",
    "type": "debug",
    "z": "6cf71678.9a8418",
    "name": "",
    "active": true,
    "tosidebar": true,
    "console": false,
    "tostatus": false,
    "complete": "true",
    "targetType": "full",
    "x": 370,
    "y": 80,
    "wires": []
  },
  {
    "id": "6bc398a4.8dd3c8",
    "type": "change",
    "z": "6cf71678.9a8418",
    "name": "",
    "rules": [
      {
        "t": "set",
        "p": "left",
        "pt": "msg",
        "to": "[\"left once\",\"left twice\",\"left twice\",\"left once right twice\",\"both once\"]",
        "tot": "json"
      },
      {
        "t": "set",
        "p": "right",
        "pt": "msg",
        "to": "[\"right once\",\"right twice\",\"right twice\",\"left once right twice\",\"left once right twice\",\"both once\"]",
        "tot": "json"
      }
    ],
    "action": "",
    "property": "",
    "from": "",
    "to": "",
    "reg": false,
    "x": 140,
    "y": 120,
    "wires": [
      [
        "51132fe1.03234"
      ]
    ]
  },
  {
    "id": "51132fe1.03234",
    "type": "differences",
    "z": "6cf71678.9a8418",
    "name": "",
    "leftInput": "left",
    "leftInputType": "msg",
    "rightInput": "right",
    "rightInputType": "msg",
    "func": "⋃",
    "outputType": "msg",
    "output": "payload",
    "x": 180,
    "y": 160,
    "wires": [
      [
        "8f85ff54.f5bff"
      ]
    ]
  }
]