"PIE" . "126678" . _:B059c7839ad6853f2a8c0f59fe9755013 . "Etymology for: sulcus (la1612)" . "*solk‑o‑" . "*solk‑o‑" . . _:B059c7839ad6853f2a8c0f59fe9755013 "*solk‑o‑" .