that is the point the result could be not unique. as I've mentioned before answers ("c.com","b.com","a.com") and ("b.com","c.com","a.com") are correct, but "c.com,b.com,a.com" != "b.com,c.com,a.com".
But if it would be required to sort uris based on the left part, than it will be another (next) task, with higher difficulty

Hi, thanks for comment, I've tried to explain it with "other part of Uri doesn't affect sorting." if you don't mind I'll add your example to kata desctiption.
Not sure if I can change test because answers ("c.com","b.com","a.com") and ("b.com","c.com","a.com") are equal that's why I've marked kata as 7 kyu.

Would be better if test checks value and not the order of results