Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Construct a 3x3 multiplication table.

### Response:
| x1 | x2 | x3 
---| ---| ---| ---
x1 | 1 | 2 | 3 
x2 | 2 | 4 | 6
x3 | 3 | 6 | 9