*serp‑(j)e/o‑?

http://lila-erc.eu/data/lexicalResources/BrillEDL/id/etymon/pit1077 an entity of type: Etymon

*serp‑(j)e/o‑?
Etymology for: sarp(i)ō (la1449)
*serp‑(j)e/o‑? 
123453 
PIt 

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