Bug Report for anagram-groups

Bug Report for https://neetcode.io/problems/anagram-groups

Please describe the bug below and include any steps to reproduce the bug or screenshots if possible.

The instruction says that I can return the sublists in any order but I doesn't accept my answer: 
```
Last executed test case

Input:

strs=["","b"]
Your Output:

[["","b"]]
Expected output:

[["b"],[""]] 
```