I'm really asking about the pertinentive case: how do you use it? Its name suggests it should be used like the topic or the of in cases where it really means about or when it is like Game of Thrones where it isn't a game possessed by thrones, but instead a game pertaining to throne (okay, in truth only one throne matters).
Yet, when I got a clue as to how it should be used, clavtieθu-ra-si is translated as the members of the Clavtie family. Since I don't know much, is θu a morpheme which means member or family? 'Cause then I think I can figure out why it's translated as it is.
Many thanks in advance. Oh, and if someone has found a good source for this language, it'd be great if you could share that rare piece of knowledge