Generate a more complex version of this sentence Nalika Osorkon II's precise reign length is unknown, sawetara ahli Mesir kaya Von Beckerath -- ing bukuné taun 1997 Chronology of the Egyptian Pharaohs --.
Mesthi wae, versi sing luwih rumit saka ukara kasebut yaiku "Nalika wektu pemerintahan Osorkon II sing tepat ora dingerteni, sawetara ahli Mesir kaya Von Beckerath - ing bukune taun 1997 Chronology of the Egyptian Pharaohs - lan Aidan Dodson nyaranake kisaran antara 38 nganti 39 taun. "