Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Ido -eyo
German -ei (derived)
Esperanto -ejo (derived)

Ido gazoneyo (affix)
Ido koqueyo (affix)
Ido tombeyo (affix)
Ido enterigeyo (affix)
Ido uceleyo (affix)
Ido abadeyo (affix)
Ido balneyo (affix)
Ido arboreyo (affix)
Ido bucheyo (affix)
Ido kavaleyo (affix)
Ido gareyo (affix)
Ido kancelereyo (affix)
Ido vestizeyo (affix)