Find the two non-repeating elements in an array of repeating elements?
arr = [2, 3, 7, 9, 11, 2, 3, 11]
7, 9
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Find the two non-repeating elements in an array of repeating elements?

### Response:
7, 9