[
    {
        $group: {
            _id: "$participantId",
            documents: { $push: "$$ROOT" },
            count: { $sum: 1 }
        }
    },
    {
        $match: {
            count: { $gt: 1 }
        }
    },
    {
        $unwind: "$documents"
    },
    {
        $match: {
            "documents.programCode": { $ne: "" }
        }
    },
    {
        $group: {
            _id: {
                participantId: "$_id",
                programCode: "$documents.programCode",
                programStartDate: "$documents.programStartDate"
            },
            baselineId: { $first: "$_id" },
            documentIds: { $push: "$documents._id" }, 
            documents: { $push: "$documents" },
            count: { $sum: 1 }
        }
    },
    {
        $match: {
            count: { $gt: 1 }
        }
    },
    {
        $project: {
            _id: 1,
            participantId: "$_id.participantId",
            programCode: "$_id.programCode",
            programStartDate: "$_id.programStartDate",
            baselineId: 1,
            documentIds: 1 
        }
    },
    {
        $lookup: {
            "from": "participant",
            "localField": "participantId",
            "foreignField": "_id",
            "as": "temp"
        }
    },
    {
        $match: {
            "temp.userStatus": { $ne: "TEST" },
            $and: [
                { "temp.email": { $nin: [/deleted/] } },
                { "temp": { $ne: null } }
            ]
        }
    },
    {
        $unwind:"$documentIds"
    }
    {
        $project: {
            _id:0
            "participantId": { $arrayElemAt: ["$temp._id", 0] },
            "email": { $arrayElemAt: ["$temp.email", 0] },
            "documentIds": 1 
        }
    }
]