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

→ Old Irish dia (affix)
→ Old Irish dia (affix)
→ Old Irish fora (affix)
→ Old Irish ara (affix)
→ Old Irish forsa (affix)
→ Old Irish úa (affix)