A grain account, dating to the late Ptolemaic or Roman period and inscribed on a wooden tablet, is kept in the Egypt Centre of Swansea University (United Kingdom). It details the seed-grain that has been distributed to the arable land in a specific month. Two categories of grain are mentioned, sw and šbnnꜢ. The latter, probably related to šbn, ‘grain’, is not attested in this form in any Demotic text so far.