[
    {
        "max_words": 14,
        "min_words": 4,
        "mode": "solvable"
    },
    {
        "max_words": 7,
        "min_words": 4,
        "mode": "unsolvable"
    },
    {
        "max_words": 8,
        "min_words": 5,
        "mode": "solvable"
    },
    {
        "max_words": 10,
        "min_words": 5,
        "mode": "unsolvable"
    }
]