_:Bf5da12180f5c64e745006cbf7d48d2f1 "*seh₁‑ro‑" . "PIE" . "124555" . _:Bf5da12180f5c64e745006cbf7d48d2f1 . "Etymology for: sērus (la1501)" . "*seh₁‑ro‑" . "*seh₁‑ro‑" . .