Record a83b8f3080aa4b0aac9951f276bd6ab8

Here is a short Python program.

```python
base = 2
nums = [3, 3, 1, 3]
height = 4
nums.extend([base, 9])
base += len(nums)
base += height
```

After this program runs, what is the value of `base`? Work through it carefully, then give the final answer on its own last line as `ANSWER: <python literal>`.

To find the final value of `base`, let's step through the code line by line:

1.  `base = 2`: The variable `base` is initialized to **2**.
2.  `nums = [3, 3, 1, 3]`: A list `nums` is created with 4 elements.
3.  `height = 4`: The variable `height` is initialized to **4**.
4.  `nums.extend([base, 9])`: 
    *   The current value of `base` is 2.
    *   The list `[2, 9]` is appended to `nums`.
    *   `nums` becomes `[3, 3, 1, 3, 2, 9]`.
5.  `base += len(nums)`:
    *   The length of `nums` is now 6.
    *   `base = 2 + 6`, so `base` becomes **8**.
6.  `base += height`:
    *   The value of `height` is 4.
    *   `base = 8 + 4`, so `base` becomes **12**.

Final value of `base` is 12.

ANSWER: 12

(no reasoning captured)