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Wegner stresses that it is unlikely that Amenemhat III, Senusret's son and successor, would still be working on his father's temple nearly four decades into his own reign. He notes that the only possible explanation for the block's existence at the project is that Senusret III had a 39-year reign, with the final 20 years in coregency with his son Amenemhat III. Since the project was associated with a project of Senusret III, his Regnal Year was presumably used to date the block, rather than Year 20 of Amenemhat III. Wegner interprets this as an implication that Senusret was still alive in the first two decades of his son's reign.