Error Bug

The following code does not work as expected:

```python
# power set
# print("Power set:", list(your_combinations.powerSet()))

# combinations with repetition
# print("Combinations with repetition:", list(your_combinations.combinations(2, True)))

# combinations without repetition
# print("Combinations without repetition:", list(your_combinations.combinations(2)))

# permutations with repetition
# print("Permutations with repetition:", list(your_combinations.permutations(2, True)))

# permutations without repetition
# print("Permutations without repetition:", list(your_combinations.permutations(2)))
```

Start by locating the public API for your_combinations and running the commented powerSet, combinations, and permutations examples with a minimal input. Compare each result with the documented combinatorics behavior; the issue is complete when the failing example or examples produce the expected results.

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