Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Old Dutch ir
Proto-Germanic *jūz (inherited(odt/dum))
Proto-West Germanic *jiʀ (inherited(odt/dum))

Old Dutch irskinan (prefix)
Old Dutch irskellan (prefix)
Old Dutch irbelgan (prefix)
Old Dutch irwervan (prefix)