{
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    "name": "FM__r",
    "features": {
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            "name": "_r",
            "optional": true,
            "type": "FEATURE",
            "note": ""
        },
        "_r_13": {
            "name": "_r_13",
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            "type": "FEATURE",
            "note": ""
        },
        "_r_13_14": {
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            "note": ""
        },
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            "note": ""
        },
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        },
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            "type": "FEATURE",
            "note": ""
        },
        "_r_17_21": {
            "name": "_r_17_21",
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            "type": "OR",
            "note": ""
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            "type": "FEATURE",
            "note": ""
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            "note": ""
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            "note": ""
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    "tree": {
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                        "id": "_r_13_15"
                    },
                    {
                        "id": "_r_13_16"
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            {
                "id": "_r_17",
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                            },
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                        "id": "_r_17_39",
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            {
                "id": "_r_18",
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                        "id": "_r_18_19"
                    },
                    {
                        "id": "_r_18_20"
                    }
                ]
            }
        ]
    },
    "constraints": {}
}