Great, thanks Dentzil. I've not marked an issue before so wasn't 100% on the procedure. I've resolved the issue. Thanks for making the changes.

I think the description is unclear where it says if null then return empty array (in inline formatting). My solution was correct but wasn't passing because for a long time I thought it meant return "empty array" as a string, because the words had been written, rather than writing return []. So I'd either take away the inline formatting or change it to [].

Hey Matt, thanks for the feedback. Would you be able to describe this in a bit more detail so that I can make sure I've properly understood you? Are you saying that the random tests are only testing for incompatible name combinations? What do you mean by 'which is not in an array'? My random tests were using an array if that's what you mean? I've made the change to the description :-)

Thanks Rahul, I've changed this now :-)