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

→ English eke (inherited)
→ Afrikaans ook (inherited)
→ Old English eac (inherited)
→ Cimbrian òch (inherited)
→ Danish og (derived)
→ German auch (derived)
→ Middle English ek (inherited)
→ North Frisian uk (derived)
→ West Frisian ek (inherited)
→ Westrobothnian åg (derived)
→ Old High German ouh (inherited)
→ Gothic 𐌰𐌿𐌺 (inherited)
→ Alemannic German au (inherited)
→ Hunsrik aach (inherited)
→ Luxembourgish och (inherited)
→ Norwegian Bokmål og (inherited)
→ Norwegian Bokmål Troms og Finnmark (inherited)
→ Dutch ook (inherited)
→ Old Norse ok (inherited)
→ Old Norse auk (inherited)
→ Old Norse ᛅᚢᚴ (inherited)
→ Old Frisian ak (inherited)
→ Elfdalian og (derived)
→ Pennsylvania German aa (inherited)
→ Saterland Frisian uk (derived)
→ Swedish och (derived)
→ West Flemish wok (inherited)
→ Yiddish אויך (derived)