[
    {
        "predicate": {
            "items": [ "minecraft:stone_sword" ]
        },
        "item": "tetra:modular_sword",
        "modules": {
            "sword/blade": [ "sword/basic_blade", "basic_blade/copper" ],
            "sword/hilt": [ "sword/basic_hilt", "basic_hilt/stick" ],
            "sword/pommel": [ "sword/decorative_pommel", "decorative_pommel/copper" ],
            "sword/guard": [ "sword/makeshift_guard", "makeshift_guard/copper" ]
        }
    },
    {
        "predicate": {
            "items": [ "minecraft:stone_shovel" ]
        },
        "item": "tetra:modular_single",
        "modules": {
            "single/head": [ "single/basic_shovel", "basic_shovel/copper" ],
            "single/handle": [ "single/basic_handle", "basic_handle/stick" ]
        }
    },
    {
        "predicate": {
            "items": [ "minecraft:stone_pickaxe" ]
        },
        "item": "tetra:modular_double",
        "modules": {
            "double/head_left": [ "double/basic_pickaxe_left", "basic_pickaxe/copper" ],
            "double/head_right": [ "double/basic_pickaxe_right", "basic_pickaxe/copper" ],
            "double/handle": [ "double/basic_handle", "basic_handle/stick" ]
        }
    },
    {
        "predicate": {
            "items": [ "minecraft:stone_hoe" ]
        },
        "item": "tetra:modular_double",
        "modules": {
            "double/head_left": [ "double/hoe_left", "hoe/copper" ],
            "double/head_right": [ "double/butt_right", "butt/copper" ],
            "double/handle": [ "double/basic_handle", "basic_handle/stick" ]
        }
    },
    {
        "predicate": {
            "items": [ "minecraft:stone_axe" ]
        },
        "item": "tetra:modular_double",
        "modules": {
            "double/head_left": [ "double/basic_axe_left", "basic_axe/copper" ],
            "double/head_right": [ "double/butt_right", "butt/copper" ],
            "double/handle": [ "double/basic_handle", "basic_handle/stick" ]
        }
    }
]