←
Proto-Indo-European *h₃ep- (root)
←
Proto-Indo-European *h₃ep- (mention)
←
Proto-Indo-European *h₁op- (derived)
←
Proto-Italic *opnis (inherited)
→
English omni- (mention)
→
Indonesian bus (mention)
→
Indonesian bis (mention)
→
Norwegian Bokmål buss (mention)
→
Sanskrit अपस् (mention)