{
    "type": "minecraft:random_patch",
    "config": {
        "feature": {
            "feature": {
                "type": "minecraft:simple_block",
                "config": {
                    "to_place": {
                        "type": "minecraft:simple_state_provider",
                        "state": {
                            "Name": "minecraft:short_grass"
                        }
                    }
                }
            },
            "placement": [
                {
                    "type": "minecraft:block_predicate_filter",
                    "predicate": {
                        "type": "minecraft:matching_blocks",
                        "blocks": [
                            "minecraft:grass_block"
                        ],
                        "offset": [
                            0,
                            -1,
                            0
                        ]
                    }
                },
                {
                    "type": "minecraft:block_predicate_filter",
                    "predicate": {
                        "type": "minecraft:matching_blocks",
                        "blocks": [
                            "minecraft:air"
                        ],
                        "offset": [
                            0,
                            0,
                            0
                        ]
                    }
                }
            ]
        },
        "tries": 1,
        "xz_spread": 0,
        "y_spread": 0
    }
}