Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Latvian iekša
Old Church Slavonic ѩтро (cognate)
Middle Low German inster (cognate)
Ancient Greek ἔντερον (cognate)
Proto-Indo-European *en-styā-s (mention)
Proto-Indo-European *en- (mention)
Proto-Indo-European *h₁en (mention)
Lithuanian įšcios (cognate)
Latvian iekšas (mention)
Latvian iešas (mention)
Latvian iekšā (mention)
Latvian iekšan (mention)
Latvian iekš (mention)
Old Norse istr (cognate)
Old Prussian instran (cognate)

Latvian ārs (link)
Latvian iekšan (mention)
Latvian iekšējs (suffix)