 That led to variants like "dagi" and "dage" ("day", dative singular) and "tungon" and "tungun" ("tongue", genitive, dative, accusative singular and nominative, dative, accusative plural).The forms with "e" and "o" are generally found later on, showing the gradual reduction of the articulatory distinction, eventually merging into a schwa ().A short phrase from the gospel book of Munsterbilzen Abbey, written around 1130, still shows several unstressed vowels distinguished