Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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English diaeresis
Ancient Greek διαίρεσις (derived)
Ancient Greek διά (mention)
Ancient Greek αἱρέω (mention)

English reëxtend (link)
English co-öperative (link)
English coëxist (link)
English reënable (link)
English reëxpressed (link)
English coöccur (link)
English reëducating (link)
English deëmphasize (link)