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

→ English deaf (inherited)
→ Old English deaf (inherited)
→ German taub (inherited)
→ German doof (derived)
→ Middle Dutch doof (inherited)
→ Old High German toub (inherited)
→ Hunsrik daab (inherited)
→ German Low German doof (inherited)
→ Dutch doof (inherited)
→ Dutch dof (inherited)
→ Plautdietsch doof (inherited)
→ Saterland Frisian doof (derived)