mainStructure = {
  "series": [
    # "BTG"
    {
    "series": [
        # "BTG_PC",
        {
            "series": [
    {
      "parallel_no_redundancy": [
        "3DCS-CAB001A",
        "3DCS-CAB001B"
      ]
    },
    {
      "parallel_no_redundancy": [
        "3DCS-CAB002A", 
        "3DCS-CAB002B"
      ]
    },
    {
      "parallel_no_redundancy": [
        "3DCS-CAB003A",
        "3DCS-CAB003B"
      ]
    },
    {
      "parallel_no_redundancy": [
        "3DCS-CAB004A",
        "3DCS-CAB004B"
      ]
    },
    {
      "parallel_no_redundancy": [
        "3DCS-CAB005A",
        "3DCS-CAB005B", 
        "3DCS-CAB005C"
      ]
    },
    {
      "parallel_no_redundancy": [
        "3DCS-CAB006A",
        "3DCS-CAB006B"
      ]
    },
    "3DCS-CAB007",
    "3DCS-CAB008",
    {
      "parallel_no_redundancy": [
        "3DCS-CAB009A",
        "3DCS-CAB009B"
      ]
    },
    {
      "parallel_no_redundancy": [
        "3DCS-CAB010A",
        "3DCS-CAB010B"
      ]
    },
    {
      "parallel_no_redundancy": [
        "3DCS-CAB011A",
        "3DCS-CAB011B"
      ]
    },
    "3DCS-CAB012",
    {
      "parallel_no_redundancy": [
        "3DCS-CAB013A",
        "3DCS-CAB013B"
      ]
    },
    {
      "parallel_no_redundancy": [
        "3DCS-CAB014A",
        "3DCS-CAB014B"
      ]
    },
    "3DCS-CAB015",
    "3DCS-CO001",
    {
      "parallel_no_redundancy": [
        "3DCS-CO002A",
        "3DCS-CO002B"
      ]
    },
    {
      "parallel_no_redundancy": [
        "3DCS-CO003A",
        "3DCS-CO003B",
        "3DCS-CO003C",
        "3DCS-CO003D"
      ]
    },
    "3DCS-CO004",
    {
      "parallel_no_redundancy": [
        "3DCS-CO005A",
        "3DCS-CO005B",
        "3DCS-CO005C"
      ]
    },
    {
      "parallel_no_redundancy": [
        "3DCS-CO006A",
        "3DCS-CO006B",
        "3DCS-CO006C"
      ]
    },
    "3DCS-CO007",
    "3DCS-CO008"
  ]
        },
       #"BTG_SAC",
       {
        "series": [
            {
            "parallel": [
                {
                "parallel_no_redundancy": [
                    {"series": ["00ACR-M001A", "00ACR-C001A"]},
                    {"series": ["00ACR-M001B", "00ACR-C001B"]}
                ]
                },
                {"series": ["00ACR-M001C", "00ACR-C001C"]},
                {"series": ["00ACR-M001D", "00ACR-C001D"]}
            ]
            },
            {
            "parallel": ["00IA-A001A", "00IA-A001B"]
            },
            "3IA-T005"
        ]
        }, 
        #"BTG_SCR",
        {
        "series": ["00SCR-Z001", "00SCR-Z015"]
        },
        #"BTG_FW",
        {
            "series": [
                "3FW-H040",
                {
                    "parallel": [
                        {
                            "parallel_no_redundancy": [
                                {
                                    "series": [
                                        "3LOT-T010A",
                                        #"FW_BFT A"
                                        {
                                                "series": [
                                                    "3LOT-H010A",
                                                    {
                                                    "parallel": ["3LOT-T090A", "3LOT-T100A"]
                                                    },
                                                    {
                                                    "parallel": [
                                                        {
                                                        "parallel_no_redundancy": [
                                                            {"series": ["3LOT-M010A", "3LOT-P010A"]},
                                                            {"series": ["3LOT-M020A", "3LOT-P020A"]}
                                                        ]
                                                        },
                                                        {"series": ["3LOT-M050A", "3LOT-P050A"]}
                                                    ]
                                                    },
                                                    "3LOT-M080A",
                                                    "3LOT-P080A",
                                                    {
                                                    "parallel": ["3LOT-S010A", "3LOT-S020A"]
                                                    },
                                                    "3LOT-PF080A",
                                                    "3LOT-M120A",
                                                    "3LOT-F120A",
                                                    "3FW-P020A",
                                                    "3FW-H011A",
                                                    "3FW-H012A",
                                                    "3FW-AU030A",
                                                    "3FW-P010A",
                                                    "3BFT-ST010A",
                                                    "3BFT-AU040A"
                                                ]
                                                },
                                    ]
                                },
                                {
                                    "series": [
                                        "3LOT-T010B",
                                        #"FW_BFT B"
                                        {
  "series": [
    "3LOT-H010B",
    {
      "parallel": ["3LOT-T090B", "3LOT-T100B"]
    },
    {
      "parallel": [
        {
          "parallel_no_redundancy": [
            {"series": ["3LOT-M010B", "3LOT-P010B"]},
            {"series": ["3LOT-M020B", "3LOT-P020B"]}
          ]
        },
        {"series": ["3LOT-M050B", "3LOT-P050B"]}
      ]
    },
    "3LOT-M080B",
    "3LOT-P080B",
    {
      "parallel": ["3LOT-S010B", "3LOT-S020B"]
    },
    "3LOT-PF080B",
    "3LOT-M120B",
    "3LOT-F120B",
    "3FW-P020B",
    "3FW-H011B",
    "3FW-H012B",
    "3FW-AU030B",
    "3FW-P010B",
    "3BFT-ST010B",
    "3BFT-AU040B"
  ]
}
                                    ]
                                }
                            ]
                        },
                        #"FW_MBFP"
                        {
                        "series": ["3LOM-M330", "3LOM-P330", "3LOM-H310", "3LOM-P310", "3LOM-H370", "3LOM-P370", "3FW-P310", "3FW-M321", "3FW-M320", "3FW-AU330", "3FW-H301", "3FW-H302", "3FW-P300"]
                        }
                    ]
                },
                "3FW-H070",
                "3FW-H060",
                "3FW-H050"
            ]
        },
        #"BTG_BOL",
        {
        "series": [
            #"BOL_DP",
            {
            "series": [
                "3BOL-FD501",
                {
                "parallel_no_redundancy": [
                    {"series": [{
  "series": ["3DP-FDR711A", "3DP-M712A", "3DP-M711A"]
}, {
  "series": ["3DP-M741A", "3DP-BM741A", "3DP-CVT701A", "3DP-CVT711A", "3DP-M761A", "3DP-P761A", "3DP-M781A", "3DP-P781A", "3DP-M731A", "3DP-BM731A"]
}, {
  "series": ["3DP-B701A", "3DP-B702A", "3DP-B703A", "3DP-B704A"]
}]},
                    {"series": [{
  "series": ["3DP-FDR711B", "3DP-M712B", "3DP-M711B"]
}, {
  "series": ["3DP-M741B", "3DP-BM741B", "3DP-CVT701B", "3DP-CVT711B", "3DP-M761B", "3DP-P761B", "3DP-M781B", "3DP-P781B", "3DP-M731B", "3DP-BM731B"]
}, {
  "series": ["3DP-B701B", "3DP-B702B", "3DP-B703B", "3DP-B704B"]
}]},
                    {"series": ["BOL_DP_FDR C", "BOL_DP_MILL C", "BOL_DP_CB 3"]},
                    {"series": ["BOL_DP_FDR D", "BOL_DP_MILL D", "BOL_DP_CB 4"]},
                    {"series": ["BOL_DP_FDR E", "BOL_DP_MILL E", "BOL_DP_CB 5"]},
                    {"series": ["BOL_DP_FDR F", "BOL_DP_MILL F", "BOL_DP_CB 6"]}
                ]
                }
            ]
            },
            "BOL_OB",
            "BOL_BDW",
            "3BOL-H501",
            "BOL_MS",
            "BOL_BSS",
            "3CRH-W002",
            "BOL_BRS",
            "BOL_HRH",
            "BOL_SB"
        ]
        },
        "BTG_TUR",
        "BTG_GEN", 
        "BTG_COND",
        "BTG_CW",
        "BTG_AFG",
        "BTG_ASH",
        "BTG_SPS",
        "BTG_KLH"
    ]
    },
    
    "CMN"
  ]
}