Chronological Distribution
possible pre Old Akkadian period (before 2300 BC)	___
Period of Puzur-Sushinak (circa 2150-2100 BC)	___ ___ ___ ___
Possible 21st century BC	___
End of the 3rd millennium BC	___
Period of Eparti II and Shilhaha (circa 1950 BC)	___