Chronological Distribution
possible pre Old Akkadian period (before 2300 BC)	___
Period of Puzur-Sushinak (circa 2150-2100 BC)	___ ___ ___ ___
End of the 3rd millennium BC	___ ___
Period of Itatu I (circa 1970 BC)	___ ___
Period of Zemt-Akone I (circa 1920-1900 BC)	___
Period of Pala-ishan (circa 1900-1880 BC)	___
Unknown	___