Generate a more complex version of this sentence Dukes of neighboring lands, three brothers Gineika, Milgerinas (Milgrynas) and Tučė (Dučius), grew unhappy with expanding power of Mindaugas and his clan.
Mesthi wae, versi ukara sing luwih rumit yaiku "Duke saka tanah tetanggan, telung sadulur Gineika, Milgerinas lan Tučė, dadi ora seneng karo kekuwatan Mindaugas lan klane lan nyerang properti Lengvenis (dipercaya ana ing Nalšia, sisih lor-wétan Lithuania kanthi pusat ing Ginučiai Hillfort) ".