Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Proto-Mon-Khmer *ruj

→ Bahnar roi (inherited)
→ Khmer រុយ (inherited)
→ Eastern Lawa โร-อี (inherited)
→ Eastern Lawa โล-อี (inherited)
→ Semai rooy (inherited)
→ Vietnamese rồi (inherited)
→ Vietnamese rơi (inherited)
→ Vietnamese ruồi (inherited)