Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Old Irish fíach

→ Irish fiach (inherited)
→ Irish féicheamh (mention)
→ Scottish Gaelic fiach (inherited)
→ Manx feeagh (inherited)
→ Old Irish dég (compound)
→ Old Irish féchem (affix)