Old East Mannish(O.E.M) was the language spoken by the early Alamannish tribes that roamed the north-eastern parts of Mer-Caroth in the early days. It established many important differences from the Western mannish languages including but not limited to, the great vowel shift (u -> ö, /gi/ -> u) and the plural differentiation (-iz -> -uz. This language later evolved (with northwestern influence) into Alamannish, spoken by the *Alamanuz.