Done! Thank you!

I hope it is ok like this!

I noticed that I wrote this: "The function should return all twelve possible inversions." This doesn't make any sense. I wrote it for a previously thought problem... then I changed the code nd I forgot to delete that sentence. I believe that was the problem.(?) Regarding the context, I just thought that it would be more interesting to have it. Do you think it should be completely abstract? Anyway, thank you very much!

Thanks! It all makes sense. I will change it!

1st: I was just thinking of a form input, HTML, which should return string, right? And some user should probably input the set with this common format [1,2,3]. Is my thinking wrong?

2nd: Regarding this, my thought was to create some tests for some possible mistakes where I could return message that could help to solve the problem. But maybe it doesn't make sense... I don't exactly how to do these tests in the bet way. I have seen your other messages and I will try to improve it.

Thank you!

Thanks for your input! What do you think is not so clear about the description? I didn't quite unserstand what you meant by this: "there is only one possible inversion, and translation comes after and is independent from inversion". I am a musician myself and I use this as part of my compositions processes.