Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Vietnamese ai
← Proto-Vietic *ʔeː (inherited)
← Tho - (cognate)

→ Vietnamese không ai (compound)
→ Vietnamese ai ai (mention)
→ Vietnamese bất kỳ ai (compound)
→ Vietnamese bất cứ ai (compound)
→ Vietnamese ai nấy (compound)