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

→ English beach (inherited)
→ Old English bece (inherited)
→ Old English bæc (inherited)
→ German Bach (inherited)
→ German -beck (derived)
→ Middle Dutch beke (inherited)
→ Mòcheno pòch (inherited)
→ German Low German Beek (inherited)
→ Old Dutch beki (inherited)
→ Plautdietsch Bach (inherited)