AI CAD prompt: Four-well toothbrush holder

Create a new owned Nora3D part document. Use millimeters, world XY as the base and +Z as height. These dimensions are example defaults, not a claim of compatibility with a specific product. Retain named editable native features.

1. Create **Base**, a 132 x 70 x 4 mm box, centered at X=0, Y=0, with its bottom at Z=0.
2. Create **Holder body**, a 124 x 62 x 50 mm box, centered at X=0, Y=0, with its bottom at Z=4.
3. Unite **Base**, **Holder body** as **Holder blank**. Require one connected solid.
4. Create **Socket 1**, radius 12 mm and height 70 mm along +Z, with its base center at (-44, 0, 9).
5. Create **Drain 1**, radius 2 mm and height 12 mm along +Z, with its base center at (-44, 0, -1).
6. Create **Socket 2**, radius 9 mm and height 70 mm along +Z, with its base center at (-14, 0, 9).
7. Create **Drain 2**, radius 2 mm and height 12 mm along +Z, with its base center at (-14, 0, -1).
8. Create **Socket 3**, radius 9 mm and height 70 mm along +Z, with its base center at (14, 0, 9).
9. Create **Drain 3**, radius 2 mm and height 12 mm along +Z, with its base center at (14, 0, -1).
10. Create **Socket 4**, radius 12 mm and height 70 mm along +Z, with its base center at (44, 0, 9).
11. Create **Drain 4**, radius 2 mm and height 12 mm along +Z, with its base center at (44, 0, -1).
12. Subtract **Socket 1**, **Drain 1**, **Socket 2**, **Drain 2**, **Socket 3**, **Drain 3**, **Socket 4**, **Drain 4** from **Holder blank**, consuming the tool solids; name the result **Toothbrush holder**.

## Public controls

| Control | Default | Range | Step | Meaning |
| --- | ---: | --- | ---: | --- |
| Left handle socket radius | 12 | 10-15 | 0.5 | Radius for the left brush handle, including fit clearance. |
| Right handle socket radius | 12 | 10-15 | 0.5 | Radius for the right brush handle, including fit clearance. |
| Holder height above base | 50 | 40-60 | 1 | Height above the 4 mm base; the wells stay open at the top. |

Keep all other features, positions and dimensions fixed. Expose only the listed controls. Radius means radius, not diameter; include physical clearance when choosing dimensions. Preserve open cavities, drainage paths and a single connected solid throughout the stated ranges.