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

→ English thy (inherited)
→ English thine (inherited)
→ Old English þin (inherited)
→ Cimbrian doi (inherited)
→ Old High German din (inherited)
→ Old Dutch thin (inherited)
→ Old Saxon thin (inherited)
→ Scots thy (inherited)
→ Saterland Frisian din (inherited)
→ Yiddish דײַן (inherited)