[0]: https://en.m.wikipedia.org/wiki/List_of_countries_by_number_...
E.g. Mother's sister = Mausi
Mother's sister's child = Mauseri/mausera
Father's younger brother's child = chacheri/chachera
And so on.
Although some of these are more obscure and I'm not sure how commonly they are used these days.
Notably, mapping the entire path isn't congruent with the concept in the topic, which encompasses both "Father's sister's daughter, younger than me" and "Mother's sibling's daughter, younger than me" in one phrase.
[0]: https://en.m.wikipedia.org/wiki/List_of_countries_by_number_...