←
Proto-Indo-European *h₃er- (root)
←
Proto-Indo-European *h₂epó (derived)
←
Proto-Indo-European *h₃er- (derived)
←
Proto-Indo-European *pro- (derived)
←
Proto-Indo-European *pró (mention)
←
Proto-Indo-European *per- (mention)
←
Proto-Indo-European *wokʷ- (derived)
←
Proto-Indo-European *wekʷ- (mention)
←
Proto-Italic *ab (derived)
←
Proto-Italic *orjōr (derived)
←
Proto-Italic *pro- (derived)