[
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        "l_range": [
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        ],
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        ],
        "v2_range": [
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        ]
    },
    {
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        ],
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            1
        ],
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        ]
    },
    {
        "max_n": 100,
        "l_range": [
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        ],
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        ],
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        ]
    },
    {
        "max_n": 2,
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        ],
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        ],
        "v2_range": [
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        ]
    }
]